8 Modify /etc/aliases

Now we should open /etc/aliases. Make sure that postmaster points to root and root to your own username or your email address, e.g. like this:

vi /etc/aliases

[...]
postmaster: root
root: root@yourdomain.tld
[...]

Whenever you modify /etc/aliases, you must run

newaliases

afterwards and restart Postfix:

/etc/init.d/postfix restart

9 Quota Exceedance Notifications

If you want to get notifications about all the email accounts that are over quota, then do this:

cd /usr/local/sbin/
wget http://puuhis.net/vhcs/quota.txt
mv quota.txt quota_notify
chmod 755 quota_notify

Open /usr/local/sbin/quota_notify and edit the variables at the top. Further down in the file (towards the end) there are two lines where you should add a % sign:

vi /usr/local/sbin/quota_notify

[...]
my $POSTFIX_CF = "/etc/postfix/main.cf";
my $MAILPROG = "/usr/sbin/sendmail -t";
my $WARNPERCENT = 80;
my @POSTMASTERS = ('postmaster@yourdomain.tld');
my $CONAME = 'My Company';
my $COADDR = 'postmaster@yourdomain.tld';
my $SUADDR = 'postmaster@yourdomain.tld';
my $MAIL_REPORT = 1;
my $MAIL_WARNING = 1;
[...]
           print "Subject: WARNING: Your mailbox is $lusers{$luser}% full.\n";
[...]
           print "Your mailbox: $luser is $lusers{$luser}% full.\n\n";
[...]

Run

crontab -e

to create a cron job for that script:

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

10 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

and

250-AUTH PLAIN LOGIN

everything is fine:

root@server1:~# 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.
root@server1:~#

Type

quit

to return to the system shell.

11 Install Roundcube Mail

Create a new VirtualHost in Apache2 for webmail access. Make sure you change any instance of mail.domain.com to your own domain.

vi /etc/apache2/sites-available/mail.example.com

<VirtualHost *>
             ServerAdmin webmaster@localhost
             ServerName mail.example.com
             DocumentRoot /var/mail.example.com
             <Directory />
                        Options FollowSymLinks
                        AllowOverride None
             </Directory>
             <Directory /var/mail.example.com/>
                        Options FollowSymLinks
                        AllowOverride AuthConfig
                        Order allow,deny
                        allow from all
                        # Uncomment this directive is you want to see apache2's
                        # default start page (in /apache2-default) when you go to /
                        #RedirectMatch ^/$ /apache2-default/
             </Directory>
             ErrorLog /var/log/apache2/mail.error.log
             # Possible values include: debug, info, notice, warn, error, crit,
             # alert, emerg.
             LogLevel warn
             CustomLog /var/log/apache2/mail.access.log combined
             ServerSignature On
</VirtualHost>

Make the directory for the document root of the new site:

mkdir /var/mail.domain.com

Then symlink that to the sites-enabled directory and restart Apache2:

cd /etc/apache2/sites-enabled
ln –s ../sites-available/mail.domain.com 001-mail.domain.com
/etc/init.d/apache2 restart

Download and unpack Roundcube:

wget http://easynews.dl.sourceforge.net/sourceforge/roundcubemail/roundcubemail-0.1-rc2.tar.gz
tar zxvf roundcubemail-0.1-rc2.tar.gz
cd roundcubemail-0.1-rc2
cp –r * ../
cd ..
rm –rf roundcubemail-0.1-rc2*

Now we must configure Roundcube to attach to our servers:

cd config/
cp db.inc.php.dist db.inc.php
vi db.inc.php

Line 21 will need to be modified as follows:

$rcmail_config['db_dsnw'] = 'mysql://mail_admin:mail_admin_password@localhost/roundcubemail';

Then modify the main.inc.php file:

cp main.inc.php.dist main.inc.php
vi main.inc.php

Line 38:

$rcmail_config['default_host'] = 'localhost';

Line 63:

$rcmail_config['smtp_server'] = 'localhost';

Line 70:

$rcmail_config['smtp_user'] = '%u';
// SMTP password (if required) if you use %p as the password RoundCube
// will use the current user's password for login
$rcmail_config['smtp_pass'] = '%p';

Now we need to make a DB and grant privileges to Roundcube to access the DB:

mysql –u root –p

create database roundcubemail;
grant all privileges on roundcubemail.* to mail_admin@localhost identified by 'mail_admin_password';
quit;

Now populate the db:

mysql –u mail_admin -p roundcubemail < /var/mail.example.com/SQL/mysql.initial.sql

Roundcube should now be setup and accessible at http://mail.example.com
NOTE: Keep in mind you can’t log in as a user until mail is sent to that user.

To do this manually connect to the mail server and send a piece of mail:

telnet localhost 25

Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mail.example.com ESMTP Postfix (Ubuntu)

ehlo me

250-mail.domain.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

mail from: root@domain.com

250 2.1.0 Ok

rcpt to: root@domain.com

250 2.1.5 Ok

data

354 End data with <CR><LF>.<CR><LF>

Subject: Testing
test
.

250 2.0.0 Ok: queued as 6B4022D82B5

quit

221 2.0.0 Bye
Connection closed by foreign host.

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