I am using Centos with Virtualmin pro (both latest/patched versions 5.x & 3.63) all domains have been moved as a result of a system failure in a different data center, so all the domains have been restored from Virtual Pro backups and all work perfectly except for 1 which is getting the error:-
Sorry, we were unable to deliver your message to the following address.
All of the other domains (20+) work and these emails for this 1 domain are being rejected from ALL incoming domains. Emails can be sent drom this domain OK, and are accepted from other domains also on that same server but not outside the server.
The website and everything else works perfectly just not the incoming emails.
Any clues ?
I have also been trying to look in the /var/log/maillog file but that is empty which is very strange, but is not affecting the other domains.