Pengguna dan Domain Virtual Dengan Postfix, Courier, MySQL, dan SquirrelMail (Ubuntu 12.04 LTS)

pengguna tabel menyimpan semua pengguna virtual (yaitu alamat email, karena alamat email dan nama pengguna sama) dan kata sandi (dalam terenkripsi form!) dan nilai kuota untuk setiap kotak surat (dalam contoh ini nilai defaultnya adalah 10485760 byte yang berarti 10MB).

transportasi tabel adalah opsional, ini untuk pengguna tingkat lanjut. Ini memungkinkan untuk meneruskan email untuk pengguna tunggal, seluruh domain atau semua email ke server lain. Misalnya,

akan meneruskan semua email untuk example.com melalui protokol smtp ke server dengan alamat IP 1.2.3.4 (tanda kurung siku [] berarti "jangan mencari data MX DNS" (yang masuk akal untuk alamat IP...). Jika Anda menggunakan nama domain yang sepenuhnya memenuhi syarat (FQDN), Anda tidak akan menggunakan tanda kurung siku.).

BTW, (Saya berasumsi bahwa alamat IP dari sistem server email Anda adalah 192.168.0.100) Anda dapat mengakses phpMyAdmin melalui http://192.168.0.100/phpmyadmin/ di browser dan masuk sebagai mail_admin. Kemudian Anda dapat melihat database. Nanti Anda dapat menggunakan phpMyAdmin untuk mengatur server email Anda.

5 Konfigurasi Postfix

Sekarang kita harus memberitahu Postfix di mana ia dapat menemukan semua informasi dalam database. Oleh karena itu kita harus membuat enam file teks. Anda akan melihat bahwa saya memberi tahu Postfix untuk terhubung ke MySQL pada alamat IP 127.0.0.1 alih-alih localhost. Ini karena Postfix berjalan di chroot jail dan tidak memiliki akses ke soket MySQL yang akan coba disambungkan jika saya memberi tahu Postfix untuk menggunakan localhost. Jika saya menggunakan 127.0.0.1 Postfix menggunakan jaringan TCP untuk terhubung ke MySQL yang tidak ada masalah bahkan di chroot jail (alternatifnya adalah memindahkan soket MySQL ke chroot jail yang menyebabkan beberapa masalah lain).

Harap pastikan bahwa /etc/mysql/my.cnf berisi baris berikut:

vi /etc/mysql/my.cnf

[...]
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address           = 127.0.0.1
[...]

Jika Anda harus mengubah /etc/mysql/my.cnf, silakan restart MySQL sekarang:

/etc/init.d/mysql restart

Jalankan

netstat -tap | grep mysql

untuk memastikan bahwa MySQL mendengarkan pada 127.0.0.1 (localhost.localdomain):

[dilindungi email]:/usr/src# netstat -tap | grep mysql
tcp       0      0 localhost.localdo:mysql *:*                  DENGARKAN      3895/mysqld
[email protected]:/usr/src#

Sekarang mari kita buat enam file teks kita.

vi /etc/postfix/mysql-virtual_domains.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT domain AS virtual FROM domains WHERE domain='%s'
hosts = 127.0.0.1

vi /etc/postfix/mysql-virtual_forwardings.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT destination FROM forwardings WHERE source='%s'
hosts = 127.0.0.1

vi /etc/postfix/mysql-virtual_mailboxes.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT CONCAT(SUBSTRING_INDEX(email,'@',-1),'/',SUBSTRING_INDEX(email,'@',1),'/') FROM users WHERE email='%s'
hosts = 127.0.0.1

vi /etc/postfix/mysql-virtual_email2email.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT email FROM users WHERE email='%s'
hosts = 127.0.0.1

vi /etc/postfix/mysql-virtual_transports.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT transport FROM transport WHERE domain='%s'
hosts = 127.0.0.1

vi /etc/postfix/mysql-virtual_mailbox_limit_maps.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT quota FROM users WHERE email='%s'
hosts = 127.0.0.1

Kemudian ubah izin dan grup file-file ini:

chmod o=/etc/postfix/mysql-virtual_*.cf
chgrp postfix /etc/postfix/mysql-virtual_*.cf

Sekarang kita membuat pengguna dan grup bernama vmail dengan direktori home /home/vmail. Di sinilah semua kotak surat akan disimpan.

groupadd -g 5000 vmail
penggunaadd -g vmail -u 5000 vmail -d /home/vmail -m

Selanjutnya kita melakukan beberapa konfigurasi Postfix. Pastikan Anda mengganti server1.example.com dengan FQDN yang valid, jika tidak, Postfix Anda mungkin tidak berfungsi dengan baik!

postconf -e 'myhostname =server1.example.com'
postconf -e 'mydestination =server1.example.com, localhost, localhost.localdomain'
postconf -e 'mynetworks =127.0.0.0/8'
postconf -e 'virtual_alias_domains ='
postconf -e 'virtual_alias_maps =proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf'
postconf -e 'virtual_mailbox_domains =proxy:mysql:/etc/postfix/mysql-virtual_domains.cf'
postconf -e 'virtual_mailbox_maps =proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf'
postconf -e 'virtual_mailbox_base =/home/vmail'
postconf -e 'virtual_uid_maps =static:5000'
postconf -e 'virtual_gid_maps =static:5000'
postconf -e ' smtpd_sasl_auth_enable =yes'
postconf -e 'broken_sasl_auth_clients =yes'
postconf -e 'smtpd_sasl_authenticated_header =yes'
postconf -e 'smtpd_recipient__resto_resto_recipient__resto -e 'smtpd_use_tls =yes'
postconf -e 'smtpd_tls_cert_file =/etc/postfix/smtpd.cert'
postconf -e 'smtpd_tls_key_file =/etc/postfix/smtpd.key'
-e 'transport_maps =proxy:mysql:/etc/postfix/mysql-virtual_transports.cf'
postconf -e 'virtual_maildir_extended =yes'
postconf -e 'virtual_mailbox_limit_maps =proxy:mysql:/etc/postfix /mysql-virtual_mailbox_limit_maps.cf'
postconf -e 'virtual_mailbox_limit_override =yes'
postconf -e 'virtual_maildir_limit_message ="Pengguna yang Anda coba jangkau melebihi kuota."'
postconf -e 'virtual_overquota_bounce =yes'
postconf -e 'proxy_read_maps =$ local_recipient_maps $ mydestination $ virtual_alias_maps $ virtual_alias_domains $ virtual_mailbox_maps $ virtual_mailbox_domains $ relay_recipient_maps $ relay_domains $ canonical_maps $ sender_canonical_maps $ recipient_canonical_maps $ relocated_maps $ transport_maps $ mynetworks $ virtual_mailbox_limit_maps'

Setelah itu kita buat sertifikat SSL yang dibutuhkan untuk TLS:

cd /etc/postfix
openssl req -new -outform PEM -out smtpd.cert -newkey rsa:2048 -nodes -keyout smtpd.key -keyform PEM -days 365 -x509

Nama Negara (kode 2 huruf) [AU]:<-- Masukkan Nama Negara Anda (mis., "DE").
Nama Negara Bagian atau Provinsi (nama lengkap) [Some-State]:<-- Masukkan Negara Bagian Anda atau Nama Provinsi.
Nama Lokalitas (mis., kota) []:<-- Masukkan Kota Anda.
Nama Organisasi (mis., perusahaan) [Internet Widgits Pty Ltd]:<-- Masukkan Nama Organisasi Anda (mis., nama perusahaan Anda).
Nama Unit Organisasi (mis., seksi) []:<-- Masukkan Nama Unit Organisasi Anda (mis. "Departemen TI").
Nama Umum (mis. nama ANDA) []:<-- Masukkan Nama Domain yang Memenuhi Syarat dari sistem (misalnya "server1.example.com").
Alamat Email []:<-- Masukkan Alamat Email Anda.

Kemudian ubah izin smtpd.key:

chmod o= /etc/postfix/smtpd.key

6 Konfigurasi Saslauthd

Jalankan pertama

mkdir -p /var/spool/postfix/var/run/saslauthd

Kemudian edit /etc/default/saslauthd.conf Setel MULAI ke ya dan ubah baris OPTIONS="-c -m /var/run/saslauthd" menjadi OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r":

vi /etc/default/saslauthd

#
# Settings for saslauthd daemon
# Please read /usr/share/doc/sasl2-bin/README.Debian for details.
#

# Should saslauthd run automatically on startup? (default: no)
START=yes

# Description of this saslauthd instance. Recommended.
# (suggestion: SASL Authentication Daemon)
DESC="SASL Authentication Daemon"

# Short name of this saslauthd instance. Strongly recommended.
# (suggestion: saslauthd)
NAME="saslauthd"

# Which authentication mechanisms should saslauthd use? (default: pam)
#
# Available options in this Debian package:
# getpwent  -- use the getpwent() library function
# kerberos5 -- use Kerberos 5
# pam       -- use PAM
# rimap     -- use a remote IMAP server
# shadow    -- use the local shadow password file
# sasldb    -- use the local sasldb database file
# ldap      -- use LDAP (configuration is in /etc/saslauthd.conf)
#
# Only one option may be used at a time. See the saslauthd man page
# for more information.
#
# Example: MECHANISMS="pam"
MECHANISMS="pam"

# Additional options for this mechanism. (default: none)
# See the saslauthd man page for information about mech-specific options.
MECH_OPTIONS=""

# How many saslauthd processes should we run? (default: 5)
# A value of 0 will fork a new process for each connection.
THREADS=5

# Other options (default: -c -m /var/run/saslauthd)
# Note: You MUST specify the -m option or saslauthd won't run!
#
# WARNING: DO NOT SPECIFY THE -d OPTION.
# The -d option will cause saslauthd to run in the foreground instead of as
# a daemon. This will PREVENT YOUR SYSTEM FROM BOOTING PROPERLY. If you wish
# to run saslauthd in debug mode, please run it by hand to be safe.
#
# See /usr/share/doc/sasl2-bin/README.Debian for Debian-specific information.
# See the saslauthd man page and the output of 'saslauthd -h' for general
# information about these options.
#
# Example for chroot Postfix users: "-c -m /var/spool/postfix/var/run/saslauthd"
# Example for non-chroot Postfix users: "-c -m /var/run/saslauthd"
#
# To know if your Postfix is running chroot, check /etc/postfix/master.cf.
# If it has the line "smtp inet n - y - - smtpd" or "smtp inet n - - - - smtpd"
# then your Postfix is running in a chroot.
# If it has the line "smtp inet n - n - - smtpd" then your Postfix is NOT
# running in a chroot.
#OPTIONS="-c -m /var/run/saslauthd"
OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r"

Kemudian buat file /etc/pam.d/smtp. Seharusnya hanya berisi dua baris berikut (pastikan untuk mengisi detail database Anda yang benar):

vi /etc/pam.d/smtp

auth    required   pam_mysql.so user=mail_admin passwd=mail_admin_password host=127.0.0.1 db=mail table=users usercolumn=email passwdcolumn=password crypt=1
account sufficient pam_mysql.so user=mail_admin passwd=mail_admin_password host=127.0.0.1 db=mail table=users usercolumn=email passwdcolumn=password crypt=1

Selanjutnya buat file /etc/postfix/sasl/smtpd.conf. Seharusnya terlihat seperti ini:

vi /etc/postfix/sasl/smtpd.conf

pwcheck_method: saslauthd
mech_list: plain login
allow_plaintext: true
auxprop_plugin: sql
sql_engine: mysql
sql_hostnames: 127.0.0.1
sql_user: mail_admin
sql_passwd: mail_admin_password
sql_database: mail
sql_select: select password from users where email = '%[email protected]%r'

Selanjutnya tambahkan pengguna postfix ke grup sasl (ini memastikan bahwa Postfix memiliki izin untuk mengakses saslauthd):

adduser postfix sasl

Kemudian restart Postfix dan Saslauthd:

/etc/init.d/postfix restart
/etc/init.d/saslauthd restart

7 Konfigurasikan Kurir

Sekarang kita harus memberi tahu Courier bahwa itu harus mengautentikasi terhadap database MySQL kita. Pertama, edit /etc/courier/authdaemonrc dan ubah nilai authmodulelist sehingga berbunyi:

vi /etc/courier/authdaemonrc

[...]
authmodulelist="authmysql"
[...]

Kemudian buat cadangan /etc/courier/authmysqlrc dan kosongkan file lama:

cp /etc/courier/authmysqlrc /etc/courier/authmysqlrc_orig
cat /dev/null> /etc/courier/authmysqlrc

Kemudian buka /etc/courier/authmysqlrc dan masukkan baris berikut ke dalamnya:

vi /etc/courier/authmysqlrc

MYSQL_SERVER localhost
MYSQL_USERNAME mail_admin
MYSQL_PASSWORD mail_admin_password
MYSQL_PORT 0
MYSQL_DATABASE mail
MYSQL_USER_TABLE users
MYSQL_CRYPT_PWFIELD password
#MYSQL_CLEAR_PWFIELD password
MYSQL_UID_FIELD 5000
MYSQL_GID_FIELD 5000
MYSQL_LOGIN_FIELD email
MYSQL_HOME_FIELD "/home/vmail"
MYSQL_MAILDIR_FIELD CONCAT(SUBSTRING_INDEX(email,'@',-1),'/',SUBSTRING_INDEX(email,'@',1),'/')
#MYSQL_NAME_FIELD
MYSQL_QUOTA_FIELD quota

Selama penginstalan, sertifikat SSL untuk IMAP-SSL dan POP3-SSL dibuat dengan hostname localhost. Untuk mengubah ini ke nama host yang benar (server1.example.com dalam tutorial ini), hapus sertifikat...

cd /etc/courier
rm -f /etc/courier/imapd.pem
rm -f /etc/courier/pop3d.pem

... dan ubah dua file berikut; ganti CN=localhost dengan CN=server1.example.com (Anda juga dapat mengubah nilai lainnya, jika perlu):

vi /etc/courier/imapd.cnf

[...]
CN=server1.example.com
[...]

vi /etc/courier/pop3d.cnf 

[...]
CN=server1.example.com
[...]

Kemudian buat ulang sertifikatnya...

mkimapdcert
mkpop3dcert

... dan mulai ulang Kurir:

/etc/init.d/courier-authdaemon restart
/etc/init.d/courier-imap restart
/etc/init.d/courier-imap-ssl restart
/etc/ init.d/courier-pop restart
/etc/init.d/courier-pop-ssl restart

Dengan menjalankan

telnet localhost pop3

Anda dapat melihat apakah server POP3 Anda berfungsi dengan benar. Seharusnya mengembalikan +OK Halo. (Ketik quit untuk kembali ke shell Linux.)

[email protected]:/etc/courier# telnet localhost pop3
Mencoba 127.0.0.1...
Terhubung ke localhost.localdomain.
Karakter Escape adalah '^]'.
+OK Halo.
<-- berhenti
+OK Semoga lain kali lebih beruntung.
Koneksi ditutup oleh host asing.
[email protected]:/etc/courier#

8 Ubah /etc/aliases

Sekarang kita harus membuka /etc/aliases. Pastikan postmaster menunjuk ke root dan root ke nama pengguna atau alamat email Anda sendiri, mis. seperti ini:

vi /etc/aliases

[...]
postmaster: root
root: [email protected]
[...]

atau seperti ini (jika administrator adalah nama pengguna Anda sendiri):

[...]
postmaster: root
root:   administrator
[...]

Setiap kali Anda memodifikasi /etc/aliases, Anda harus menjalankan

newaliases

setelah itu dan mulai ulang Postfix:

/etc/init.d/postfix restart

9 Instal amavisd-new, SpamAssassin, Dan ClamAV

Untuk menginstal amavisd-new, spamassassin dan clamav, jalankan perintah berikut:

apt-get install amavisd-new spamassassin clamav clamav-daemon zoo unzip bzip2 libnet-ph-perl libnet-snpp-perl libnet-telnet-perl nomarch lzop pax

Setelah itu kita harus mengkonfigurasi amavisd-new. Konfigurasi dibagi dalam berbagai file yang berada di direktori /etc/amavis/conf.d. Lihatlah masing-masing untuk menjadi akrab dengan konfigurasi. Sebagian besar pengaturan baik-baik saja, namun kita harus memodifikasi tiga file:

Pertama kita harus mengaktifkan ClamAV dan SpamAssassin di /etc/amavis/conf.d/15-content_filter_mode dengan menghapus komentar pada baris @bypass_virus_checks_maps dan @bypass_spam_checks_maps:

vi /etc/amavis/conf.d/15-content_filter_mode

Filenya akan terlihat seperti ini:

use strict;

# You can modify this file to re-enable SPAM checking through spamassassin
# and to re-enable antivirus checking.

#
# Default antivirus checking mode
# Please note, that anti-virus checking is DISABLED by
# default.
# If You wish to enable it, please uncomment the following lines:


@bypass_virus_checks_maps = (
   \%bypass_virus_checks, \@bypass_virus_checks_acl, \$bypass_virus_checks_re);


#
# Default SPAM checking mode
# Please note, that anti-spam checking is DISABLED by
# default.
# If You wish to enable it, please uncomment the following lines:


@bypass_spam_checks_maps = (
   \%bypass_spam_checks, \@bypass_spam_checks_acl, \$bypass_spam_checks_re);

1;  # ensure a defined return

Dan kemudian Anda harus melihat pengaturan spam dan tindakan untuk spam-/virus-mails di /etc/amavis/conf.d/20-debian_defaults. Tidak perlu mengubah apa pun jika pengaturan default sudah sesuai untuk Anda. File berisi banyak penjelasan sehingga tidak perlu menjelaskan pengaturan di sini:

vi /etc/amavis/conf.d/20-debian_defaults

[...]
$QUARANTINEDIR = "$MYHOME/virusmails";
$quarantine_subdir_levels = 1; # enable quarantine dir hashing

$log_recip_templ = undef;    # disable by-recipient level-0 log entries
$DO_SYSLOG = 1;              # log via syslogd (preferred)
$syslog_ident = 'amavis';    # syslog ident tag, prepended to all messages
$syslog_facility = 'mail';
$syslog_priority = 'debug';  # switch to info to drop debug output, etc

$enable_db = 1;              # enable use of BerkeleyDB/libdb (SNMP and nanny)
$enable_global_cache = 1;    # enable use of libdb-based cache if $enable_db=1

$inet_socket_port = 10024;   # default listening socket

$sa_spam_subject_tag = '***SPAM*** ';
$sa_tag_level_deflt  = 2.0;  # add spam info headers if at, or above that level
$sa_tag2_level_deflt = 6.31; # add 'spam detected' headers at that level
$sa_kill_level_deflt = 6.31; # triggers spam evasive actions
$sa_dsn_cutoff_level = 10;   # spam level beyond which a DSN is not sent
[...]
$final_virus_destiny      = D_DISCARD;  # (data not lost, see virus quarantine)
$final_banned_destiny     = D_BOUNCE;   # D_REJECT when front-end MTA
$final_spam_destiny       = D_BOUNCE;
$final_bad_header_destiny = D_PASS;     # False-positive prone (for spam)
[...]

Terakhir, edit /etc/amavis/conf.d/50-user dan tambahkan baris $pax='pax'; di tengah:

vi /etc/amavis/conf.d/50-user

use strict;

#
# Place your configuration directives here.  They will override those in
# earlier files.
#
# See /usr/share/doc/amavisd-new/ for documentation and examples of
# the directives you can use in this file
#
$pax='pax';

#------------ Do not modify anything below this line -------------
1;  # ensure a defined return

Setelah itu, jalankan perintah ini untuk menambahkan pengguna clamav ke grup amavis dan untuk memulai ulang amavisd-new dan ClamAV:

adduser clamav amavis
/etc/init.d/amavis restart
/etc/init.d/clamav-freshclam restart
/etc/init.d/clamav-daemon restart

Sekarang kita harus mengkonfigurasi Postfix untuk menyalurkan email masuk melalui amavisd-new:

postconf -e 'content_filter =amavis:[127.0.0.1]:10024'
postconf -e 'receive_override_options =no_address_mappings'

Setelah itu tambahkan baris berikut ke /etc/postfix/master.cf:

vi /etc/postfix/master.cf

[...]
amavis unix - - - - 2 smtp
        -o smtp_data_done_timeout=1200
        -o smtp_send_xforward_command=yes

127.0.0.1:10025 inet n - - - - smtpd
        -o content_filter=
        -o local_recipient_maps=
        -o relay_recipient_maps=
        -o smtpd_restriction_classes=
        -o smtpd_client_restrictions=
        -o smtpd_helo_restrictions=
        -o smtpd_sender_restrictions=
        -o smtpd_recipient_restrictions=permit_mynetworks,reject
        -o mynetworks=127.0.0.0/8
        -o strict_rfc821_envelopes=yes
        -o receive_override_options=no_unknown_recipient_checks,no_header_body_checks

Kemudian restart Postfix:

/etc/init.d/postfix restart

Sekarang jalankan

netstat -tap

dan Anda akan melihat Postfix (master) mendengarkan pada port 25 (smtp) dan 10025, dan amavisd-new pada port 10024:

[email protected]:/etc/courier# netstat -tap
Koneksi Internet aktif (server dan terbentuk)
Proto Recv-Q Send-Q Local Address         Foreign Address      /  State P 0 0 localhost.localdo:10025*:*Dengarkan 25911/master
tcp 0 0 localhost.localdo:mysql*:*dengarkan 3895/mysqld
tcp 0 0*:http*:*dengarkan 4845/Apache2
tcp        0      0 *:ssh                   *:*                     LISTEN      649/sshd
tcp        0      0 *:smtp                  *:*                     LISTEN      25911/master
tcp        0      0 localhost.localdo:10024 *:*                     LISTEN 24534/amavisd (mast
tcp        0     52 server1.example.com:ssh 192.168.0.199:4745      ESTABLISHED 847/0
tcp6       0      0 [::]:pop3               [::]:*                  LISTEN      20989/ couriertcpd
tcp6       0      0 [::]:imap2              [::]:*                  LISTEN      20921/couriertcpd
tcp6       0      0 [::]:ssh                [::]:*                  LISTEN      649/sshd
tcp6       0      0 [::]:smtp               [::]:*                  LISTEN      25911/master
tcp6       0      0 [::]:imaps              [::]:*                  LISTEN      20958/couriertcpd
tcp6       0      0 [::]:pop3s              [::]:*                  LISTEN      21026/couriertcpd
[email protected]:/etc/courier#

10 Install Razor, Pyzor And DCC And Configure SpamAssassin

Razor, Pyzor and DCC are spamfilters that use a collaborative filtering network. To install Razor and Pyzor, run

apt-get install razor pyzor

DCC isn't available in the Ubuntu 12.04 repositories, so we install it as follows:

cd /tmp
wget http://www.dcc-servers.net/dcc/source/dcc-dccproc.tar.Z
tar xzvf dcc-dccproc.tar.Z
cd dcc-dccproc-1.3.142
./configure --with-uid=amavis
make
make install
chown -R amavis:amavis /var/dcc
ln -s /var/dcc/libexec/dccifd /usr/local/bin/dccifd

Now we have to tell SpamAssassin to use these three programs. Edit /etc/spamassassin/local.cf and add the following lines to it:

vi /etc/spamassassin/local.cf

[...]
#dcc
use_dcc 1
dcc_path /usr/local/bin/dccproc

#pyzor
use_pyzor 1
pyzor_path /usr/bin/pyzor

#razor
use_razor2 1
razor_config /etc/razor/razor-agent.conf

#bayes
use_bayes 1
use_bayes_rules 1
bayes_auto_learn 1

Then we must enable the DCC plugin in SpamAssassin. Open /etc/spamassassin/v310.pre and uncomment the loadplugin Mail::SpamAssassin::Plugin::DCC line:

vi /etc/spamassassin/v310.pre

[...]
# DCC - perform DCC message checks.
#
# DCC is disabled here because it is not open source.  See the DCC
# license for more details.
#
loadplugin Mail::SpamAssassin::Plugin::DCC
[...]

You can check your SpamAssassin configuration by executing:

spamassassin --lint

It shouldn't show any errors.

Now there's a little bug in the amavisd-new init script. Open /etc/init.d/amavis...

vi /etc/init.d/amavis

... and comment out the STOP="--stop --quiet --pidfile $PIDFILE --name ${DAEMONNAME}" line and add STOP="--stop --quiet --pidfile $PIDFILE" instead:

[...]
set -e

START="--start --quiet --pidfile $PIDFILE --name ${DAEMONNAME} --startas ${DAEMON}"
#STOP="--stop --quiet --pidfile $PIDFILE --name ${DAEMONNAME}"
STOP="--stop --quiet --pidfile $PIDFILE"
PARAMS=

check_noncompatible_upgrade()
[...]

Restart amavisd-new afterwards:

/etc/init.d/amavis restart

Now we update our SpamAssassin rulesets as follows:

sa-update --no-gpg

We create a cron job so that the rulesets will be updated regularly. Jalankan

crontab -e

to open the cron job editor. Create the following cron job:

23 4 */2 * * /usr/bin/sa-update --no-gpg &> /dev/null

This will update the rulesets every second day at 4.23h.

11 Quota Exceedance Notifications

If you want to get notifications about all the email accounts that are over quota, then create the file /usr/local/sbin/quota_notify:

cd /usr/local/sbin/
vi quota_notify

#!/usr/bin/perl -w

# Author <[email protected]>
#
# This script assumes that virtual_mailbox_base in defined
# in postfix's main.cf file. This directory is assumed to contain
# directories which themselves contain your virtual user's maildirs.
# For example:
#
# -----------/
#            |
#            |
#    home/vmail/domains/
#        |          |
#        |          |
#  example.com/  foo.com/
#                   |
#                   |
#           -----------------
#           |       |       |
#           |       |       |
#         user1/   user2/  user3/
#                           |
#                           |
#                        maildirsize
#

use strict;

my $POSTFIX_CF = "/etc/postfix/main.cf";
my $MAILPROG = "/usr/sbin/sendmail -t";
my $WARNPERCENT = 80;
my @POSTMASTERS = ('[email protected]');
my $CONAME = 'My Company';
my $COADDR = '[email protected]';
my $SUADDR = '[email protected]';
my $MAIL_REPORT = 1;
my $MAIL_WARNING = 1;

#get virtual mailbox base from postfix config
open(PCF, "< $POSTFIX_CF") or die $!;
my $mboxBase;
while (<PCF>) {
   next unless /virtual_mailbox_base\s*=\s*(.*)\s*/;
   $mboxBase = $1;
}
close(PCF);

#assume one level of subdirectories for domain names
my @domains;
opendir(DIR, $mboxBase) or die $!;
while (defined(my $name = readdir(DIR))) {
   next if $name =~ /^\.\.?$/;        #skip '.' and '..'
   next unless (-d "$mboxBase/$name");
   push(@domains, $name);
}
closedir(DIR);
#iterate through domains for username/maildirsize files
my @users;
chdir($mboxBase);
foreach my $domain (@domains) {
        opendir(DIR, $domain) or die $!;
        while (defined(my $name = readdir(DIR))) {
           next if $name =~ /^\.\.?$/;        #skip '.' and '..'
           next unless (-d "$domain/$name");
      push(@users, {"$name\@$domain" => "$mboxBase/$domain/$name"});
        }
}
closedir(DIR);

#get user quotas and percent used
my (%lusers, $report);
foreach my $href (@users) {
   foreach my $user (keys %$href) {
      my $quotafile = "$href->{$user}/maildirsize";
      next unless (-f $quotafile);
      open(QF, "< $quotafile") or die $!;
      my ($firstln, $quota, $used);
      while (<QF>) {
         my $line = $_;
              if (! $firstln) {
                 $firstln = 1;
                 die "Error: corrupt quotafile $quotafile"
                    unless ($line =~ /^(\d+)S/);
                 $quota = $1;
            last if (! $quota);
            next;
         }
         die "Error: corrupt quotafile $quotafile"
            unless ($line =~ /\s*(-?\d+)/);
         $used += $1;
      }
      close(QF);
      next if (! $used);
      my $percent = int($used / $quota * 100);
      $lusers{$user} = $percent unless not $percent;
   }
}

#send a report to the postmasters
if ($MAIL_REPORT) {
   open(MAIL, "| $MAILPROG");
   select(MAIL);
   map {print "To: $_\n"} @POSTMASTERS;
   print "From: $COADDR\n";
   print "Subject: Daily Quota Report.\n";
   print "DAILY QUOTA REPORT:\n\n";
   print "----------------------------------------------\n";
   print "| % USAGE |            ACCOUNT NAME          |\n";
   print "----------------------------------------------\n";
   foreach my $luser ( sort { $lusers{$b} <=> $lusers{$a} } keys %lusers ) {
      printf("|   %3d   | %32s |\n", $lusers{$luser}, $luser);
      print "---------------------------------------------\n";
   }
        print "\n--\n";
        print "$CONAME\n";
        close(MAIL);
}

#email a warning to people over quota
if ($MAIL_WARNING) {
        foreach my $luser (keys (%lusers)) {
           next unless $lusers{$luser} >= $WARNPERCENT;       # skip those under quota
           open(MAIL, "| $MAILPROG");
           select(MAIL);
           print "To: $luser\n";
      map {print "BCC: $_\n"} @POSTMASTERS;
           print "From: $SUADDR\n";
           print "Subject: WARNING: Your mailbox is $lusers{$luser}% full.\n";
           print "Reply-to: $SUADDR\n";
           print "Your mailbox: $luser is $lusers{$luser}% full.\n\n";
           print "Once your e-mail box has exceeded your monthly storage quota\n";
      print "your monthly billing will be automatically adjusted.\n";
      print "Please consider deleting e-mail and emptying your trash folder to clear some space.\n\n";
           print "Contact <$SUADDR> for further assistance.\n\n";
           print "Thank You.\n\n";
           print "--\n";
           print "$CONAME\n";
           close(MAIL);
        }
}

Make sure that you adjust the variables at the top (especially the [email protected] email address).

We must make the file executable:

chmod 755 quota_notify 

Jalankan

crontab -e

to create a cron job for that script:

0 0 * * * /usr/local/sbin/quota_notify &> /dev/null

12 Test Postfix

To see if Postfix is ready for SMTP-AUTH and TLS, run

telnet localhost 25

After you have established the connection to your Postfix mail server type

ehlo localhost

If you see the lines

250-STARTTLS

dan

250-AUTH PLAIN LOGIN

everything is fine:

[email protected]:/usr/local/sbin# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
220 server1.example.com ESMTP Postfix (Ubuntu)
<-- ehlo localhost
250-server1.example.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
<-- quit
221 2.0.0 Bye
Connection closed by foreign host.
[email protected]:/usr/local/sbin#

Type

quit

to return to the system shell.

13 Populate The Database And Test

To populate the database you can use the MySQL shell:

mysql -u root -p

  USE mail;

At least you have to create entries in the tables domains and users :

INSERT INTO `domains` (`domain`) VALUES ('example.com');
INSERT INTO `users` (`email`, `password`, `quota`) VALUES ('[email protected]', ENCRYPT('secret'), 10485760);

(Please take care that you use the ENCRYPT syntax in the second INSERT statement in order to encrypt the password!)

If you want to make entries in the other two tables, that would look like this:

INSERT INTO `forwardings` (`source`, `destination`) VALUES ('[email protected]', '[email protected]');
INSERT INTO `transport` (`domain`, `transport`) VALUES ('example.com', 'smtp:mail.example.com');

To leave the MySQL shell, type

quit;

Bagi kebanyakan orang akan lebih mudah jika mereka memiliki front-end grafis ke MySQL; therefore you can also use phpMyAdmin (in this example under http://192.168.0.100/phpmyadmin/ or http://server1.example.com/phpmyadmin/) to administrate the mail database. Again, when you create a user, go sure that you use the ENCRYPT function to encrypt the password:

I do not think I have to explain the domains and users table further.

The forwardings table can have entries like the following:

The transport table can have entries like these:

See

man transport 

untuk lebih jelasnya.

Please keep in mind that the order of entries in the transport table is important! The entries will be followed from the top to the bottom.

Important: Postfix uses a caching mechanism for the transports, therefore it might take a while until you changes in the transport table take effect. If you want them to take effect immediately, run

postfix reload 

after you have made your changes in the transport table.

14 Send A Welcome Email For Creating Maildir

When you create a new email account and try to fetch emails from it (with POP3/IMAP) you will probably get error messages saying that the Maildir doesn't exist. The Maildir is created automatically when the first email arrives for the new account. Therefore it's a good idea to send a welcome email to a new account.

First, we install the mailx package:

apt-get install mailutils

To send a welcome email to [email protected], we do this:

mailx [email protected]

You will be prompted for the subject. Type in the subject (e.g. Welcome), then press ENTER, and in the next line type your message. When the message is finished, press ENTER again so that you are in a new line, then press CTRL+D; if you don't want to cc the mail, press ENTER again:

[email protected]:/usr/local/sbin# mailx [email protected]
Cc:<-- ENTER
Subject:Welcome <-- ENTER
Welcome! Have fun with your new mail account. <-- ENTER
<-- CTRL+D
[email protected]:/usr/local/sbin#

15 Installing SquirrelMail

SquirrelMail is a webmail interface that will let your users send and receive emails in a browser. This chapter shows how to install it and adjust it to our setup so that users can even change their email account password from the SquirrelMail interface.

To install SquirrelMail, we run:

apt-get install squirrelmail squirrelmail-compatibility php-pear php-db

Next we symlink the Apache configuration that comes with the SquirrelMail package to the /etc/apache2/conf.d directory and restart Apache:

ln -s /etc/squirrelmail/apache.conf /etc/apache2/conf.d/squirrelmail.conf
/etc/init.d/apache2 restart

SquirrelMail comes with some pre-installed plugins, unfortunately none of them is capable of letting us change our email password in our MySQL database. But there's the Change SQL Password plugin which we can install manually:

cd /usr/share/squirrelmail/plugins
wget http://www.squirrelmail.org/plugins/change_sqlpass-3.3-1.2.tar.gz
tar xvfz change_sqlpass-3.3-1.2.tar.gz
cd change_sqlpass
cp config.php.sample config.php

Now we must edit config.php and adjust it to our setup. Please adjust the $csp_dsn, $lookup_password_query, $password_update_queries, $password_encryption, $csp_salt_static, and $csp_delimiter variables as follows and comment out $csp_salt_query:

vi config.php

[...]
$csp_dsn = 'mysql://mail_admin:[email protected]/mail';
[...]
$lookup_password_query = 'SELECT count(*) FROM users WHERE email = "%1" AND password = %4';
[...]
$password_update_queries = array('UPDATE users SET password = %4 WHERE email = "%1"');
[...]
$password_encryption = 'MYSQLENCRYPT';
[...]
$csp_salt_static = 'LEFT(password, 2)';
[...]
//$csp_salt_query = 'SELECT salt FROM users WHERE username = "%1"';
[...]
$csp_delimiter = '@';
[...]

The complete file looks as follows:

<?php

/**
  * SquirrelMail Change SQL Password Plugin
  * Copyright (C) 2001-2002 Tyler Akins
  *               2002 Thijs Kinkhorst <[email protected]>
  *               2002-2005 Paul Lesneiwski <[email protected]>
  * This program is licensed under GPL. See COPYING for details
  *
  * @package plugins
  * @subpackage Change SQL Password
  *
  */


   // Global Variables, don't touch these unless you want to break the plugin
   //
   global $csp_dsn, $password_update_queries, $lookup_password_query,
          $force_change_password_check_query, $password_encryption,
          $csp_salt_query, $csp_salt_static, $csp_secure_port,
          $csp_non_standard_http_port, $csp_delimiter, $csp_debug,
          $min_password_length, $max_password_length, $include_digit_in_password,
          $include_uppercase_letter_in_password, $include_lowercase_letter_in_password,
          $include_nonalphanumeric_in_password;



   // csp_dsn
   //
   // Theoretically, any SQL database supported by Pear should be supported
   // here.  The DSN (data source name) must contain the information needed
   // to connect to your database backend. A MySQL example is included below.
   // For more details about DSN syntax and list of supported database types,
   // please see:
   //   http://pear.php.net/manual/en/package.database.db.intro-dsn.php
   //
   //$csp_dsn = 'mysql://user:[email protected]/email_users';
   $csp_dsn = 'mysql://mail_admin:[email protected]/mail';


   // lookup_password_query
   //
   // This plugin will always verify the user's old password
   // against their login password, but an extra check can also
   // be done against the database for more security if you
   // desire.  If you do not need the extra password check,
   // make sure this setting is empty.
   //
   // This is a query that returns a positive value if a user
   // and password pair are found in the database.
   //
   // This query should return one value (one row, one column), the
   // value being ideally a one or a zero, simply indicating that
   // the user/password pair does in fact exist in the database.
   //
   //   %1 in this query will be replaced with the full username
   //      (including domain), such as "[email protected]"
   //   %2 in this query will be replaced with the username (without
   //      any domain portion), such as "jose"
   //   %3 in this query will be replaced with the domain name,
   //      such as "example.com"
   //   %4 in this query will be replaced with the current (old)
   //      password in whatever encryption format is needed per other
   //      plugin configuration settings (Note that the syntax of
   //      the password will be provided depending on your encryption
   //      choices, so you NEVER need to provide quotes around this
   //      value in the query here.)
   //   %5 in this query will be replaced with the current (old)
   //      password in unencrypted plain text.  If you do not use any
   //      password encryption, %4 and %5 will be the same values,
   //      except %4 will have double quotes around it and %5 will not.
   //
   //$lookup_password_query = '';
   // TERRIBLE SECURITY: $lookup_password_query = 'SELECT count(*) FROM users WHERE username = "%1" AND plain_password = "%5"';
   //$lookup_password_query = 'SELECT count(*) FROM users WHERE username = "%1" AND crypt_password = %4';
   $lookup_password_query = 'SELECT count(*) FROM users WHERE email = "%1" AND password = %4';


   // password_update_queries
   //
   // An array of SQL queries that will all be executed
   // whenever a password change attempt is made.
   //
   // Any number of queries may be included here.
   // The queries will be executed in the order given here.
   //
   //   %1 in all queries will be replaced with the full username
   //      (including domain), such as "[email protected]"
   //   %2 in all queries will be replaced with the username (without
   //      any domain portion), such as "jose"
   //   %3 in all queries will be replaced with the domain name,
   //      such as "example.com"
   //   %4 in all queries will be replaced with the new password
   //      in whatever encryption format is needed per other
   //      plugin configuration settings (Note that the syntax of
   //      the password will be provided depending on your
   //      encryption choices, so you NEVER need to provide quotes
   //      around this value in the queries here.)
   //   %5 in all queries will be replaced with the new password
   //      in unencrypted plain text - BEWARE!  If you do not use
   //      any password encryption, %4 and %5 will be the same
   //      values, except %4 will have double quotes around it
   //      and %5 will not.
   //
//   $password_update_queries = array(
//            'UPDATE users SET crypt_password = %4 WHERE username = "%1"',
//            'UPDATE user_flags SET force_change_pwd = 0 WHERE username = "%1"',
//            'UPDATE users SET crypt_password = %4, force_change_pwd = 0 WHERE username = "%1"',
//                                   );
   $password_update_queries = array('UPDATE users SET password = %4 WHERE email = "%1"');


   // force_change_password_check_query
   //
   // A query that checks for a flag that indicates if a user
   // should be forced to change their password.  This query
   // should return one value (one row, one column) which is
   // zero if the user does NOT need to change their password,
   // or one if the user should be forced to change it now.
   //
   // This setting should be an empty string if you do not wish
   // to enable this functionality.
   //
   //   %1 in this query will be replaced with the full username
   //      (including domain), such as "[email protected]"
   //   %2 in this query will be replaced with the username (without
   //      any domain portion), such as "jose"
   //   %3 in this query will be replaced with the domain name,
   //      such as "example.com"
   //
   //$force_change_password_check_query = 'SELECT IF(force_change_pwd = "yes", 1, 0) FROM users WHERE username = "%1"';
   //$force_change_password_check_query = 'SELECT force_change_pwd FROM users WHERE username = "%1"';
   $force_change_password_check_query = '';



   // password_encryption
   //
   // What encryption method do you use to store passwords
   // in your database?  Please use one of the following,
   // exactly as you see it:
   //
   //   NONE          Passwords are stored as plain text only
   //   MYSQLPWD      Passwords are stored using the MySQL password() function
   //   MYSQLENCRYPT  Passwords are stored using the MySQL encrypt() function
   //   PHPCRYPT      Passwords are stored using the PHP crypt() function
   //   MD5CRYPT      Passwords are stored using encrypted MD5 algorithm
   //   MD5           Passwords are stored as MD5 hash
   //
   //$password_encryption = 'MYSQLPWD';
   $password_encryption = 'MYSQLENCRYPT';


   // csp_salt_query
   // csp_salt_static
   //
   // Encryption types that need a salt need to know where to get
   // that salt.  If you have a constant, known salt value, you
   // should define it in $csp_salt_static.  Otherwise, leave that
   // value empty and define a value for the $csp_salt_query.
   //
   // Leave both values empty if you do not need (or use) salts
   // to encrypt your passwords.
   //
   // The query should return one value (one row, one column) which
   // is the salt value for the current user's password.  This
   // query is ignored if $csp_salt_static is anything but empty.
   //
   //   %1 in this query will be replaced with the full username
   //      (including domain), such as "[email protected]"
   //   %2 in this query will be replaced with the username (without
   //      any domain portion), such as "jose"
   //   %3 in this query will be replaced with the domain name,
   //      such as "example.com"
   //
   //$csp_salt_static = 'LEFT(crypt_password, 2)';
   //$csp_salt_static = '"a4"';  // use this format with MYSQLENCRYPT
   //$csp_salt_static = '$2$blowsomefish$';  // use this format with PHPCRYPT
   //$csp_salt_static = '';
   $csp_salt_static = 'LEFT(password, 2)';

   //$csp_salt_query = 'SELECT SUBSTRING_INDEX(crypt_password, '$', 1) FROM users WHERE username = "%1"';
   //$csp_salt_query = 'SELECT SUBSTRING(crypt_password, (LENGTH(SUBSTRING_INDEX(crypt_password, '$', 2)) + 2)) FROM users WHERE username = "%1"';
   //$csp_salt_query = 'SELECT salt FROM users WHERE username = "%1"';
   //$csp_salt_query = '';



   // csp_secure_port
   //
   // You may ensure that SSL encryption is used during password
   // change by setting this to the port that your HTTPS is served
   // on (443 is typical).  Set to zero if you do not wish to force
   // an HTTPS connection when users are changing their passwords.
   //
   // You may override this value for certain domains, users, or
   // service levels through the Virtual Host Login (vlogin) plugin
   // by setting a value(s) for $vlogin_csp_secure_port in the vlogin
   // configuration.
   //
   $csp_secure_port = 0;
   //$csp_secure_port = 443;



   // csp_non_standard_http_port
   //
   // If you serve standard HTTP web requests on a non-standard
   // port (anything other than port 80), you should specify that
   // port number here.  Set to zero otherwise.
   //
   // You may override this value for certain domains, users, or
   // service levels through the Virtual Host Login (vlogin) plugin
   // by setting a value(s) for $vlogin_csp_non_standard_http_port
   // in the vlogin configuration.
   //
   //$csp_non_standard_http_port = 8080;
   $csp_non_standard_http_port = 0;



   // min_password_length
   // max_password_length
   // include_digit_in_password
   // include_uppercase_letter_in_password
   // include_lowercase_letter_in_password
   // include_nonalphanumeric_in_password
   //
   // You can set the minimum and maximum password lengths that
   // you accept or leave those settings as zero to indicate that
   // no limit should be applied.
   //
   // Turn on any of the other settings here to check that the
   // new password contains at least one digit, upper case letter,
   // lower case letter and/or one non-alphanumeric character.
   //
   $min_password_length = 6;
   $max_password_length = 0;
   $include_digit_in_password = 0;
   $include_uppercase_letter_in_password = 0;
   $include_lowercase_letter_in_password = 0;
   $include_nonalphanumeric_in_password = 0;



   // csp_delimiter
   //
   // if your system has usernames with something other than
   // an "@" sign separating the user and domain portion,
   // specify that character here
   //
   //$csp_delimiter = '|';
   $csp_delimiter = '@';



   // debug mode
   //
   $csp_debug = 0;



?>

Now we must go into the SquirrelMail configuration and tell SquirrelMail that we use Courier as our POP3 and IMAP server and enable the Change SQL Password and the Compatibility plugins:

/usr/sbin/squirrelmail-configure

You'll see the following menu. Navigate through it as indicated:

SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Main Menu --
1.  Organization Preferences
2.  Server Settings
3.  Folder Defaults
4.  General Options
5.  Themes
6.  Address Books
7.  Message of the Day (MOTD)
8.  Plugins
9.  Database
10. Languages

D.  Set pre-defined settings for specific IMAP servers

C   Turn color on
S   Save data
Q   Quit

Command >> <-- D


SquirrelMail Configuration : Read: config.php
---------------------------------------------------------
While we have been building SquirrelMail, we have discovered some
preferences that work better with some servers that don't work so
well with others.  If you select your IMAP server, this option will
set some pre-defined settings for that server.

Please note that you will still need to go through and make sure
everything is correct.  This does not change everything.  There are
only a few settings that this will change.

Please select your IMAP server:
    bincimap    = Binc IMAP server
    courier     = Courier IMAP server
    cyrus       = Cyrus IMAP server
    dovecot     = Dovecot Secure IMAP server
    exchange    = Microsoft Exchange IMAP server
    hmailserver = hMailServer
    macosx      = Mac OS X Mailserver
    mercury32   = Mercury/32
    uw          = University of Washington's IMAP server
    gmail       = IMAP access to Google mail (Gmail) accounts

    quit        = Do not change anything
Command >> <-- courier


              imap_server_type = courier
         default_folder_prefix = INBOX.
                  trash_folder = Trash
                   sent_folder = Sent
                  draft_folder = Drafts
            show_prefix_option = false
          default_sub_of_inbox = false
show_contain_subfolders_option = false
            optional_delimiter = .
                 delete_folder = true

Press enter to continue... <-- press ENTER


SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Main Menu --
1.  Organization Preferences
2.  Server Settings
3.  Folder Defaults
4.  General Options
5.  Themes
6.  Address Books
7.  Message of the Day (MOTD)
8.  Plugins
9.  Database
10. Languages

D.  Set pre-defined settings for specific IMAP servers

C   Turn color on
S   Save data
Q   Quit

Command >> <-- 8


SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Plugins
  Installed Plugins
    1. view_as_html

  Available Plugins:
    2. administrator
    3. bug_report
    4. calendar
    5. change_sqlpass
    6. compatibility
    7. delete_move_next
    8. demo
    9. filters
    10. fortune
    11. info
    12. listcommands
    13. mail_fetch
    14. message_details
    15. newmail
    16. sent_subfolders
    17. spamcop
    18. squirrelspell
    19. test
    20. translate

R   Return to Main Menu
C   Turn color on
S   Save data
Q   Quit

Command >> <-- 6 (or whatever number the compatibility plugin has - it's needed by the change_sqlpass plugin)


SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Plugins
  Installed Plugins
    1. view_as_html
    2. compatibility

  Available Plugins:
    3. administrator
    4. bug_report
    5. calendar
    6. change_sqlpass
    7. delete_move_next
    8. demo
    9. filters
    10. fortune
    11. info
    12. listcommands
    13. mail_fetch
    14. message_details
    15. newmail
    16. sent_subfolders
    17. spamcop
    18. squirrelspell
    19. test
    20. translate

R   Return to Main Menu
C   Turn color on
S   Save data
Q   Quit

Command >> <-- 6 (the number of the change_sqlpass plugin)


SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Plugins
  Installed Plugins
    1. view_as_html
    2. compatibility
    3. change_sqlpass

  Available Plugins:
    4. administrator
    5. bug_report
    6. calendar
    7. delete_move_next
    8. demo
    9. filters
    10. fortune
    11. info
    12. listcommands
    13. mail_fetch
    14. message_details
    15. newmail
    16. sent_subfolders
    17. spamcop
    18. squirrelspell
    19. test
    20. translate

R   Return to Main Menu
C   Turn color on
S   Save data
Q   Quit

Command >> <-- S


SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Plugins
  Installed Plugins
    1. view_as_html
    2. compatibility
    3. change_sqlpass

  Available Plugins:
    4. administrator
    5. bug_report
    6. calendar
    7. delete_move_next
    8. demo
    9. filters
    10. fortune
    11. info
    12. listcommands
    13. mail_fetch
    14. message_details
    15. newmail
    16. sent_subfolders
    17. spamcop
    18. squirrelspell
    19. test
    20. translate

R   Return to Main Menu
C   Turn color on
S   Save data
Q   Quit

Command >> S

Data saved in config.php
Press enter to continue... <-- press ENTER


SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Plugins
  Installed Plugins
    1. view_as_html
    2. compatibility
    3. change_sqlpass

  Available Plugins:
    4. administrator
    5. bug_report
    6. calendar
    7. delete_move_next
    8. demo
    9. filters
    10. fortune
    11. info
    12. listcommands
    13. mail_fetch
    14. message_details
    15. newmail
    16. sent_subfolders
    17. spamcop
    18. squirrelspell
    19. test
    20. translate

R   Return to Main Menu
C   Turn color on
S   Save data
Q   Quit

Command >> <-- Q

Now you can type in http://server1.example.com/squirrelmail or http://192.168.0.100/squirrelmail in your browser to access SquirrelMail.

Log in with your email address (e.g. [email protected]) and your password:

You should find the welcome email in your inbox:

To change your password, go to Options and then select Change Password:

Type in your current password and then your new password twice:

If the password has been changed successfully, you will see the following error message which means you must log in again with your new password (because the old one isn't active anymore):

16 VMA (Virtual Mail Admin Interface)

Virtual Mail Admin (VMA) is a small PHP-based web app written to manage the email system set up in this guide. I didn't test it, but I thought I'd share.

This is what the developer (Charl Loubser) wrote to me in an email:

"Hi There,

I don't know if you'll like this, or if this has any use to you, but I thought I'd Share:

I wrote a silly little webapp for the setup you did in the Howto:https://www.howtoforge.com/virtual-users-domains-postfix-courier-mysql-squirrelmail-ubuntu-10.04

If you approve and think it worthy of sharing on your tutorial, you are more than welcome, and can feel free to do so.

As mentioned in the readme, this is not a perfect app, but it does the job for now, and I'd thing it's relatively safe in a closed environment (LAN setup between servers).

The rar file with the app is attached, but can also be downloaded at :http://code.google.com/p/vma/"

17 References

• Tutorial:ISP-style Email Service with Debian-Sarge and Postfix 2.1:http://workaround.org/articles/ispmail-sarge/
• Postfix + Quota:http://vhcs.net/new/modules/newbb/viewtopic.php?topic_id=3496&forum=17
• Mail Passwords Encrypted using saslauthd:http://www.syscp.de/docs/public/contrib/cryptedmailpws

18 Links

• Postfix MTA:http://www.postfix.org/
• Postfix Quota Patch:http://web.onda.com.br/nadal/
• phpMyAdmin:http://www.phpmyadmin.net/
• SquirrelMail:http://www.squirrelmail.org/
• Ubuntu:http://www.ubuntu.com/
• Virtual Mail Admin Interface (VMA):http://code.google.com/p/vma/