SquirrelMail: Installation (en)

Ubuntu 16.04

apt-get install apache2 php7.0 php7.0-xmlrpc php7.0-mysql php7.0-gd php7.0-cli \
php7.0-curl mysql-client mysql-server dovecot-common dovecot-imapd \
dovecot-pop3d postfix squirrelmail squirrelmail-decode

Inform Apache about the presence of SquirrelMail:

cp /etc/squirrelmail/apache.conf /etc/apache2/conf-enabled/squirrelmail.conf

Older Ubuntu

sudo locale-gen id_ID.UTF-8

apt-get install apache2 php5 php5-xmlrpc php5-mysql php5-gd php5-cli \
php5-curl mysql-client mysql-server dovecot-common dovecot-imapd \
dovecot-pop3d postfix squirrelmail squirrelmail-decode

Ensure Dovecot supports imap, usually the default is okay:

vi /etc/dovecot/dovecot.conf

protocols = imap pop3

Inform Apache about the presence of Squirrelmail:

cp /etc/squirrelmail/apache.conf /etc/apache2/conf.d/squirrelmail.conf

For Ubuntu 14.04 use:

cp /etc/squirrelmail/apache.conf /etc/apache2/conf-enabled/squirrelmail.conf

SquirrelMail Configuration

Configure Domain Squirrelmail:

/usr/sbin/squirrelmail-configure

2 -> 1 -> domain.id -> S -> Q

For Ubuntu version 11.04, edit Dovecot configuration:

vi /etc/dovecot/dovecot.conf

mail_location = mbox:~/mail:INBOX=/var/mail/%u

For Ubuntu version 11.10 and above, edit Dovecot configuration:

vi /etc/dovecot/conf.d/10-mail.conf

mail_location = mbox:~/mail:INBOX=/var/mail/%u

Restart Server:

/etc/init.d/dovecot restart
/etc/init.d/apache2 restart
/etc/init.d/postfix restart

Restart Server in Ubuntu 14.04:

service dovecot restart
/etc/init.d/apache2 restart
/etc/init.d/postfix restart

Webmail can be accessed through:

http://ip-address-server/squirrelmail

SMTP Postfix Configuration

Ideally, the SMTP Server Postfix should be informed about the domain, relayhost, and local IP:

vi /etc/postfix/main.cf

mydestination = school, localhost.localdomain, localhost, school.sch.id
relayhost = smtp.telkom.net
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.0.0/16

Fetching email to INBOX

Send email using telnet to port 25:

telnet localhost 25

helo test.com
mail from: <test@test.com>
rcpt to: <user@domain.com>
data
From: <test@test.com>
To: <user@domain.com>
Subject: test

test

.

quit

Replace user@domain.com with the email you created. For example, victim.com:

telnet localhost 25

helo test.com
mail from: <test@test.com>
rcpt to: <onno@victim.com>
data
From: <test@test.com>
To: <onno@victim.com>
Subject: test

test 

.

quit

Error

Error Syslog

In Ubuntu 11.10, if you encounter an error like:

ERROR: Could not complete request.
Query: SELECT "INBOX"
Reason Given: [SERVERBUG] Internal error occurred. Refer to server log for more information. [2012-03-12 11:21:18]

Possible cause:

syslog:Mar 12 11:21:18 ServerTIK dovecot: imap(username): Error: 
mkdir(/home/username/mail/.imap/INBOX) failed: Operation not permitted

SOLUTION:

Perform:

apt-get install mailutils
mail username

For username do:

mkdir /home/username/mail
mkdir /home/username/mail/.imap
touch /home/username/mail/.imap/INBOX
chown username.username /home/username/mail/

IPv6 Problem

If there is an issue with IPv6 add to main.cf:

inet_protocols = ipv4

Several Squirrelmail Screen Captures

References

http://www.squirrelmail.org/plugins.php
http://ubuntuforums.org/showthread.php?t=1149842 - User Self Registration

Interesting Links