Re: Question regarding permit_backup_mx & relay_domains
- Jim Keller:
> >Wietse Venema wrote:Postfix uses the inet_interfaces list (the list of IP address that
> >you must configure the proxy_interfaces parameter in main.cf,
> otherwise mail will loop
> Thanks Wietse, I actually realized after posting that NAT could be the
> problem. I'm assuming that with a mailserver that has a non-NAT,
> non-proxy external address that the mail looping won't be an issue, and
> thus proxy_interfaces can be left blank? Will postfix use the myhostname
> parameter to check against the MX record? Or will it check the
> smtp_bind_address? I'm guessing the former, but I just want to be sure.
> Thanks again.
Postfix receives mail on) to eliminate itself and equal-preference
In addition Postfix has safety checks to prevent MTA melt-down due
to routing loops, like the routing loop you had.