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How To Install SquirrelMail in Ubuntu/Debian
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How To Install SquirrelMail in Ubuntu/Debian

To Install Mail Server using SquirrelMail in Ubuntu/Debian

Squirrel mail server is a web interface which is licensed under the GNU General Public License  and is programmed in  PHP language. In this tutorial we will learn how to install SquirrelMail in Ubuntu/Debian.

Features of SquirrelMail

  • works with POP3 email
  • Allows to create email in plain text formats
  • Blocks external images by default.

Step 1: To Install PHP5 and Apache2

Install PHP5 & Apache2 , before installing ‘SquirrelMail’.


user1@linuxhelp:~$ sudo apt-get update
[sudo] password for user1:
Get:1 http://security.ubuntu.com wily-security InRelease [65.9 kB]
Hit http://in.archive.ubuntu.com wily InRelease          
Get:2 http://in.archive.ubuntu.com wily-updates InRelease [65.9 kB]                
Get:3 http://security.ubuntu.com wily-security/main Sources [46.6 kB]
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Get:49 http://in.archive.ubuntu.com wily-backports/multiverse Translation-en [28 B]                                                                                                                        
Get:50 http://in.archive.ubuntu.com wily-backports/restricted Translation-en [28 B]                                                                                                                        
Get:51 http://in.archive.ubuntu.com wily-backports/universe Translation-en [1,390 B]                                                                                                                       
Fetched 1,728 kB in 14s (116 kB/s)                                                                                                                                                                         
Reading package lists... Done
user1@linuxhelp:~$ sudo apt-get install apache2 php5
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  apache2-bin apache2-data apache2-utils libapache2-mod-php5 libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap liblua5.1-0 php5-cli php5-common php5-json php5-readline
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Setting up php5 (5.6.11+dfsg-1ubuntu3.3) ...
Processing triggers for libc-bin (2.21-0ubuntu4.1) ...
Processing triggers for systemd (225-1ubuntu9.1) ...
Processing triggers for ureadahead (0.100.0-19) ...

Step 2: To Install Postfix Mail Server

Install  Postfix Mail Server, to send and receive mails.


user1@linuxhelp:~$ sudo apt-get install postfix
Reading package lists... Done
Building dependency tree       
Reading state information... Done
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Running newaliases
Processing triggers for systemd (225-1ubuntu9.1) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for ufw (0.34-2) ...
Processing triggers for libc-bin (2.21-0ubuntu4.1) ...

Now select the default postfix configuration for your server.

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Select the type of mail configuration and here we are using the ‘Internet Site’ option.

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Enter the domain name for sending and receiving mails.

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After setting FQDN, using the below command to start the Postfix mail server.

user1@linuxhelp:~$ sudo service postfix start

Step 3: To Install Dovecot

Execute the below command to install the Dovecot a mail delivering agent.


user1@linuxhelp:~$ sudo apt-get install dovecot-imapd dovecot-pop3d
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  dovecot-core liblockfile-bin liblockfile1 lockfile-progs ntpdate
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Processing triggers for libc-bin (2.21-0ubuntu4.1) ...
Processing triggers for systemd (225-1ubuntu9.1) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for dovecot-core (1:2.2.18-2ubuntu2) ...

Start the Dovecot service by executing the below command.


user1@linuxhelp:~$ sudo service dovecot start

Step 4: To Install SquirrelMail

Install SquirrelMail, by running the following command.


user1@linuxhelp:~$ sudo apt-get install squirrelmail
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  squirrelmail-locales squirrelmail-viewashtml
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Setting up squirrelmail-locales (1.4.18-20090526-1) ...
Setting up squirrelmail-viewashtml (3.8-3) ...
Removing plugin view_as_html
Data saved in config.php
Activating plugin view_as_html
Data saved in config.php

To configure SquirrelMail execute the following command.


user1@linuxhelp:~$ sudo squirrelmail-configure

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In the prompt window, type ‘2‘ to edit the server settings and type ‘1’ to change the domain name.

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Type ‘R’ to return to the main page. To configure the general options type ‘4’.

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Now type ’11’ to change the setting of ‘Allow server-side sorting’ to ‘true’ by typing ‘y’. Hit Enter and type ‘S’ to save the changes that you have made in the configuration file.

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Copy the default configuration file to the apache2 directory to access the web interface, by using the following command.


user1@linuxhelp:~$ sudo cp /etc/squirrelmail/apache.conf /etc/apache2/sites-available/squirrelmail.conf

Run the following command to enable it.

user1@linuxhelp:~$ sudo a2ensite squirrelmail.conf
Enabling site squirrelmail.

To activate the new configuration, run the following command.

user1@linuxhelp:~$ service apache2 reload

Step 5: To create Mail Users

Create new user by running the following command.


user1@linuxhelp:~$ sudo useradd user2
user1@linuxhelp:~$ sudo passwd user2
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully

Create a home folder for the user in ‘/var/www/html/myusername’ and make it as a default home directory.

user1@linuxhelp:~$ sudo mkdir -p /var/www/html/user2
user1@linuxhelp:~$ sudo usermod -m -d /var/www/html/user2 user2
usermod: directory /var/www/html/user2 exists

Provide full permission to user by running the following command.


user1@linuxhelp:~$ sudo chown -R user2.user2 /var/www/html/user2

After setting permission to the user, Login to the mail.

Squirrel mail login page

Navigate to https://192.168.5.219/squirrelmail to access the squirrelmail. Enter your credentials to Login into Squirrel mail
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Compose mail page

Now start sending your mail.
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Squirrel mail Options

The below screen shot shows various options available in Squirrel mail.
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