Bernhard Schmidt: > Am 29.08.2012 13:20, schrieb Wietse Venema: > > Postfix logs a WARNING message if it has a problem with the hostname. > > Show that logfile message. > > I have no warning message about that, that's what is bothering me. Even
Postfix does not refuse to use a name without logging the cause.
Therefore, the problem is up-stream, some piece of #%@&(* that
does not handle your multiple PTRs on one IP address.
Wietse
