We have a Freepbx Distro running Asterisk 188.8.131.52 and it has suddenly stopped sending out email for the voicemail or fax systems. We recently decommissioned our old SBS 2003 domain controller and this seems to coincide with the service failure. So I changed the default DNS servers in the admin console to reflect the new server but still no joy. Looking at the maillog I am getting lots of connection refused on port 25 to our new servers along with other errors:
Apr 7 18:10:56 TARDIS postfix/local: 7C864285998E: to=[email protected], relay=local, delay=391767, delays=391767/0.01/0/0.08, dsn=4.2.0, status=deferred (cannot update mailbox /var/mail/root for user root. destination /var/mail/root is not owned by recipient)
and a lots of connection refused errors, I suspect it is something to do with our infrastructure change but it’s not obvious what I need to change to get this working again?.