Postfix
Check configuration postconf -n /etc/postfix/virtual # In order to translate any mailbox address from one domain to a mapped user on another domain add the following entries: # account1@olddomain.ext account1 # account2@olddomain.ext account2 # newdomain.ext DOMAIN # @newdomain.ext @olddomain.ext # this will ensure that account1@olddomain.ext AND account1@newdomain.ext is delivered to account1 and account2@[newdomain or olddomain].ext goes to account2 # After changing this file run # postmap virtual Catchalls are set up with @domain.ext userid /etc/postfix/virtual-domains # This file contains the domains for which postfix will accept email # It's not a hash file, so no need to run postmap on it. To accept messages in the mailqueue and defer them untill the primary MX server is up again, add the domain.ext to /etc/postfix/relay-domains and in transport add domain.ext etrn-only: The mail will then be delivered when sendmail -q is sent, or when telnet mailserver 25, helo originating.domain etrn defermaildomain.ext mails get defered - you can see them in mailq also in /var/spool/postfix/flush/ (see also http://lists.freebsd.org/pipermail/freebsd-questions/2006-February/112246.html http://www.postfix.org/ETRN_README.html http://archives.neohapsis.com/archives/postfix/2001-07/0730.html) postfix reload reloads the config http://wiki.ev-15.com/debian:mail_system for how to set up squirrelmail and cyrus for IMAP with postfix
You can also force the queue delivery by running
postqueue -f
or deliver a specific message by
postsuper -r queue_id