Hi guys. 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 *root@xxxxxxxxxxxxxxxxxx* and *user1@xxxxxxxxxxx* 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. Thanks. -- Ljubomir Ljubojevic (Love is in the Air) PL Computers Serbia, Europe Google is the Mother, Google is the Father, and traceroute is your trusty Spiderman... StarOS, Mikrotik and CentOS/RHEL/Linux consultant _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos