====== Mails mit virtuellen Domains auf Debian Squeeze ======
  * /etc/postfix/main.cf: <file>myhostname = localhost 
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = $myhostname
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
home_mailbox = Maildir/

virtual_mailbox_domains = /etc/postfix/vhosts
virtual_mailbox_base = /var/mail/vhosts
virtual_mailbox_maps = hash:/etc/postfix/vmaps
virtual_minium_uid = 1000
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000</file>
  * **ACHTUNG**: /var/mail/vhosts muss dem Benutzer vmail (5000:5000) gehören: <code bash>groupadd -g 5000 vmail
useradd -u 5000 -g 5000 -s /bin/false vmail
chown vmail:vmail /var/mail/</code>
  * /etc/postfix/vhosts: <file>example.com</file>
  * /etc/postfix/vmaps:<file>info@example.com example.com/info/</file>
  * <code bash>postmap /etc/postfix/vmaps
/etc/init.d/postfix restart</code>
  * **ACHTUNG:** Domainverzeichnisse (/var/mail/vhosts/example.com) müssen selbst angelegt werden

===== Dovecot =====
  * <code bash>aptitude install dovecot-common dovecot-imapd dovecot-pop3d</code>
  * /etc/dovecot/dovecot.conf: <file>base_dir = /var/run/dovecot/
protocols = imap
disable_plaintext_auth = yes
shutdown_clients = yes
log_path = /var/log/dovecot
info_log_path = /var/log/dovecot.info
log_timestamp = "%Y-%m-%d %H:%M:%S "

login_dir = /var/run/dovecot/login
login_chroot = yes
login_user = dovecot
login_greeting = Dovecot ready.
mail_location = maildir:/var/mail/vhosts/%d/%n
mmap_disable = no
valid_chroot_dirs = /var/spool/vmail
protocol imap {
  login_executable = /usr/lib/dovecot/imap-login
  mail_executable = /usr/lib/dovecot/imap
}
auth_executable = /usr/lib/dovecot/dovecot-auth
auth_verbose = yes
auth default {
  mechanisms = plain cram-md5
  passdb passwd-file {
    args = /etc/dovecot/passwd
  }
  userdb passwd-file {
    args = /etc/dovecot/users
  }
  user = root
  socket listen {
      client {
        # The client socket is generally safe to export to everyone. Typical use
        # is to export it to your SMTP server so it can do SMTP AUTH lookups
        # using it.
        path = /var/spool/postfix/private/auth-client
        mode = 0660
        user = postfix
        group = postfix
      }
    }
}
</file>

===== SASL Auth für Postfix =====
<code bash>
sudo postconf -e 'smtpd_sasl_auth_enable = yes'
sudo postconf -e 'smtpd_sasl_security_options = noplaintext,noanonymous'
sudo postconf -e 'smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination'
sudo postconf -e 'smtpd_sasl_type = dovecot'
sudo postconf -e 'smtpd_sasl_path = private/auth-client'
sudo echo "mech_list: cram-md5" > /etc/postfix/sasl/smtpd.conf
</code>

===== Ports =====
  * 143: IMAP
  * 993: IMAP SSL/TLS
  * 25:  SMTP

===== Links =====
  * [[https://help.ubuntu.com/community/PostfixVirtualMailBoxClamSmtpHowto]]