Install SquirrelMail

What is SquirrelMail / WebMail?

SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers. It has very few requirements and is very easy to configure and install. SquirrelMail has all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation.

Extract SquirrelMail

cd /root/postfixrocks
tar -zxvf squirrelmail-1.4.20.tar.gz
mv squirrelmail-1.4.20 /usr/local/apache2/htdocs/webmail

Configure SquirrelMail

cd /usr/local/apache2/htdocs/webmail/config
./conf.pl

You will see a screen like below :

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 >>

Type "2" for Server Settings
Type "A" for Update IMAP Settings
Type "6" for Authentication type
Try to detect supported mechanisms? [y/N]:Y
login, cram-md5, or digest-md5 [login]: <Press Enter> or Type "login"
Type "8" for Server software
Type courier and <Press Enter>
Type "s" for save config
Type "q" for quit the webmail config

Access SquirrelMail / Webmail

You can access your webmail from this URL below :

http://<youripaddress>/webmail

Example :
See Postfix Virtual Mapping Config Section

In this example we are using testing2 user and map it to testing@domain2.com
Login : testing
Email : testing@domain2.com

Screen capture :

After you've login into the webmail
Click "Options" like a screen below :

After you've clicked Options Menu
You will see a screen below :

Click Personal Information
And you will see a screen below :

You need to input your Full Name and your E-mail Address

Example :
Full name : testing
E-mail Address : testing@domain2.com

Click Save and Done.

If you have configure webmail without any problem.
Try to send/receive email and you need to make sure you can send and receive an email from the webmail.

If you don't have any problem with send/receive email, we assume you already successfully configured Postfix without MySQLDB with Webmail.