On Sun, Jul 12, 2009 at 03:20:21PM -0500, Noel Jones wrote: > Keld Jørn Simonsen wrote: >> >> Is it true that if a PTR was found, then this name would be displayed in >> the above log message, and not the IP number? > > No, the name will still be "unknown" if the hostname->IP lookup fails.
OK. > >> >> Anyway, can you confirm that there is no check on availablilty of the >> domain name that is referenced in the PTR RR? I would actually think >> that such a check was a wise thing to do. But then you can catch some >> valid domains that has a bad configuration. > > The reject_unknown_reverse_client_hostname and > reject_unknown_client_hostname work exactly as documented. > >> Anyway if it is a name server timeout, then I think this is always >> handled by a 450 response. In my case the mail was rejected. > > Yes, temporary errors always get a 450 response. Then I do not understand why the message was rejected. A temporary error should not result in a reject, or why should this happen? best regards keld
