Hauptsächlich verwende ich meinen vServer als EMail-Server, da ich gerne selber meine EMails verwalte als einem Anderen zu vertrauen. Außerdem kann ich meinen Spam so filtern wie ich es will. Nebenbei stellt der vServer nur das Mail-Relay und leitet alle EMails an meinen privaten Exchange-Server weiter.

Aus Dokumentationszwecken hier die Installationsabfolge.

• apt-get install -t etch-backports postfix mysql-server apache2 php5 php5-imap php5-mysql postfix-mysql dovecot-imapd phpmyadmin php-pear
• apt-get install subversion
• svn co https://postfixadmin.svn.sourceforge.net/svnroot/postfixadmin postfixadmin
• mysql-Passwort setzen: mysqladmin -u root password 'NEUESPASSWORT'

Postfixadmin

• wget http://dfn.dl.sourceforge.net/sourceforge/postfixadmin/postfixadmin_2.2.1.1_all.deb
• dpkg -i postfixadmin_2.2.1.1_all.deb
• http://SERVER/phpmyadmin und einen User mit gleichlautender DB anlegen
• /etc/postfixadmin/config.inc.php editieren und Datenbank-Einträge setzen
• http://SERVER/postfixadmin/setup.php und Superuser anlegen
• rm /usr/share/postfixadmin/setup.php
• http://SERVER/postfixadmin aufrufen - sollte alles gehen

Postfix

• /etc/postfix/master.cf
  

  # Dovecot LDA
  dovecot   unix  -       n       n       -       -       pipe
    flags=DRhu user=vmail:mail argv=/usr/lib/dovecot/deliver -d ${recipient}

• /etc/postfix/main.cf
  

  virtual_mailbox_domains         = proxy:mysql:/etc/postfix/mysql_virtual_domains_maps.cf
  virtual_mailbox_base            = /var/vmail
  virtual_mailbox_maps            = proxy:mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
  virtual_alias_maps              = proxy:mysql:/etc/postfix/mysql_virtual_alias_maps.cf
  virtual_minimum_uid             = 5000
  virtual_uid_maps                = static:5000
  virtual_gid_maps                = static:12
  virtual_transport               = dovecot
  dovecot_destination_recipient_limit = 1

• /etc/postfix/mysql_virtual_alias_maps.cf
  

  user            = postfix
  password        = postfix
  #hosts           = localhost
  hosts           = unix:/var/run/mysqld/mysqld.sock
  dbname          = postfix
  query           = SELECT goto FROM alias WHERE address='%s' AND active = '1'

• /etc/postfix/mysql_virtual_domains_maps.cf
  

  #hosts           = localhost
  hosts           = unix:/var/run/mysqld/mysqld.sock
  dbname          = postfix
  #query          = SELECT domain FROM domain WHERE domain='%s'
  #optional query to use when relaying for backup MX
  query           = SELECT domain FROM domain WHERE domain='%s' AND backupmx = '0' AND active = '1'

  user            = postfix
  password        = postfix

• /etc/postfix/mysql_relay_domains_maps.cf:

  user            = postfix
  password        = postfix
  #hosts           = localhost
  hosts           = unix:/var/run/mysqld/mysqld.sock
  dbname          = postfix
  query           = SELECT domain FROM domain WHERE domain='%s' and backupmx = '1'

• /etc/postfix/mysql_virtual_mailbox_limit_maps.cf
  

  user            = postfix
  password        = postfix
  #hosts           = localhost
  hosts           = unix:/var/run/mysqld/mysqld.sock
  dbname          = postfix
  query           = SELECT quota FROM mailbox WHERE username='%s' AND active = '1'

• /etc/postfix/mysql_virtual_mailbox_maps.cf
  

  user            = postfix
  password        = postfix
  #hosts           = localhost
  hosts           = unix:/var/run/mysqld/mysqld.sock
  dbname          = postfix
  query           = SELECT CONCAT(domain,'/',maildir) FROM mailbox WHERE username='%s' AND active = '1'

Dovecot

• mkdir -p /var/vmail
  chmod 770 /var/vmail

• useradd -r -u 5000 -g mail -d /var/vmail -s /sbin/nologin -c "Virtual mailbox" vmail

• Rechte für /var/vmail und /etc/dovecot/* auf vmail:mail setzen
  chown vmail:mail /var/vmail/
  chown vmail:mail /etc/dovecot/
• dovecot-sql.conf
  default_password_scheme = MD5-CRYPT
• Logfile anlegen und Rechte setzen
  touch /var/log/dovecot-deliver.log
  chown vmail:mail /var/log/dovecot-deliver.log