Courier_configuration

This page describes the configuration of Courier POP3/IMAP including authlib and maildrop for use with PostfixAdmin.

Courier Authlib

• /etc/authlib/authdaemonrc

  authmodulelist="authmysql"
  authmodulelistorig="authuserdb authpam authpgsql authldap authmysql authcustom authpipe"
  daemons=5
  authdaemonvar=/var/run/authdaemon.courier-imap
  DEBUG_LOGIN=0
  DEFAULTOPTIONS=""
  LOGGEROPTS=""

The first line (authmodulelist) is the most interesting one, you can probably leave the other lines in their default values. Of course you'll need "authpgsql" if you use PostgreSQL ;-)

Note that maildrop needs access to the directory containing the authlib socket (see authdaemonvar) - maybe you need to adjust the directory permissions.

• /etc/authlib/authmysqlrc

  MYSQL_SERVER localhost
  MYSQL_USERNAME mail-courier
  MYSQL_PASSWORD topsecret
  MYSQL_SOCKET /var/run/mysql/mysql.sock
  MYSQL_OPT 0
  MYSQL_DATABASE postfix
  MYSQL_USER_TABLE mailbox
  MYSQL_CLEAR_PWFIELD password # if you use cleartext passwords - or -
  # MYSQL_CRYPT_PWFIELD password # if you use encrypted passwords
  MYSQL_UID_FIELD '20000'
  MYSQL_GID_FIELD '100'
  MYSQL_LOGIN_FIELD username
  MYSQL_HOME_FIELD '/var/vmail/' as home
  MYSQL_NAME_FIELD name
  MYSQL_MAILDIR_FIELD maildir
  MYSQL_QUOTA_FIELD concat(quota,'S')
  MYSQL_WHERE_CLAUSE active=1

Courier POP3 and IMAP

• /etc/courier/*

Not too interesting here - nearly all config settings (except maybe the allowed password encryption methods) are independent from the PostfixAdmin configuration.

Maildrop

• /etc/mail/maildrop/maildroprc

  # parameters: (for foo+test@example.com)
  # test foo+test@example.com foo example.com
  # EXT Envelope-To Localpart Domain
  # $1 $2 $3 $4

  EXTENSION=$1
  ENVELOPETO=$2
  TOMAILBOX=$3
  TODOMAIN=$4

  # if you want a per-domain delivery log
  # test -d "/var/vmail/$TODOMAIN" || mkdir "/var/vmail/$TODOMAIN"
  # logfile "/var/vmail/$TODOMAIN/maildrop.log"

  # create maildir if it doesn't exist
  MAILDIR=$HOME$DEFAULT
  test -d "$MAILDIR" # check if dir exist
  if ($RETURNCODE != 0)
  {
  # log "date creating maildir $MAILDIR"
  mkdir -p $MAILDIR # create dirs with parents
  rmdir $MAILDIR # remove dir for init
  /usr/bin/maildirmake $MAILDIR # create maildir
  }

  to "$MAILDIR"

(the "create maildir" section probably does too much, but it works...)

Postfix integration

• master.cf

  maildrop unix - n n - - pipe
  flags=DRhu user=vmail argv=/usr/bin/maildrop -w 90 -d ${user}@${nexthop} ${extension} ${recipient} ${user} ${nexthop}

• main.cf

  maildrop_destination_recipient_limit = 1