Debian Resources

To add webmail option:

Login your mail server with user root.
login as: root
root@192.168.65.123's password:
Last login: Thu Sep 13 14:40:58 2007 from dd-wrt
Linux server1 2.6.18-4-686 #1 SMP Mon Mar 26 17:17:36 UTC 2007 i686

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
server1:~#apt-get install squirrelmail

Then you should get:
Run /usr/sbin/squirrelmail-configure as root to configure/upgrade config.

/usr/sbin/squirrelmail-configure
Choose option D and type
Command >> courier
then press any key
Q
to quit
Y
to save data

after we edit
nano /etc/apache2/sites-enabled/000-default

 <Directory "/usr/share/doc/">
   Options Indexes MultiViews FollowSymLinks
   AllowOverride None
   Order deny,allow
   Deny from all
   Allow from 127.0.0.0/255.0.0.0 ::1/128
 </Directory>
 Alias /squirrelmail /usr/share/squirrelmail
 <Directory /usr/share/squirrelmail>
   Options Indexes
   AllowOverride none
   DirectoryIndex index.php
   Order allow,deny
   allow from all
 </Directory>
</VirtualHost>

After restart Apache2
/etc/init.d/apache2 restart
then type in your favorite browser
http://server1.example.com/squirrelmail/src/login.php
username is User@example.com with the chosen password...

You can also customize the php for support with big mailbox
nano /etc/php5/apache2/php.ini
change
max_execution_time = 30 ................to
max_execution_time = 60
memory_limit = 16M..........................to
memory_limit = 64M

then restart postfix server

/etc/init.d/apache2 restart

Have fun