I have mail loop problem. I have master server (CentOS 5.x) for domain in question (lets call it *domainX.com* ). I used virtualmin to set it up for that and several other domains. It is Bind SOA for the domain and Postfix server. I will call this server *soa.domainX.com*
Now, I have added internal CentOS 6.x server to the company owner of the domain. I have given it hostname *server.domainX.com* and created *user1* on it. It has Postfix server on it, without public IP, and has soa.domainX.com as relay server.
What I need to learn is how to set up so mail for firstname.lastname@example.orgX.com and user1@domainX.com stay on the server.domainX.com and master Postfix on soa.domainX.com stops refusing mail for other domains with:
“554 5.4.0 Error: too many hops (in reply to end of DATA command)”
I am already searching the net, but would appreciate link to howto or hint what to look for, since I mostly find irrelevant hits.