Rainer Frey (Inxmail GmbH):
[ Charset ISO-8859-1 unsupported, converting... ]
> On Friday 10 October 2008 15:46:46 Wietse Venema wrote:
> > Rainer Frey (Inxmail GmbH):
> > > On Wednesday 08 October 2008 00:52:10 Noel Jones wrote:
> > > > Will the FILTER action accept an empty nexthop?
> > >
> > > It seems it does not (at least not correctly). If the nexthop is empty,
> > > it seems to assume the local host (which of course leads to "mail loops
> > > to myself" if the recipient domain is not handled by postfix).
> >
> > This is incorrect.
> >
> > Postfix will complain about a mail loop REGARDLESS of the nexthop
> > information unless you "filter" the mail to a non-SMTP TCP port,
> > or unless you change the smtp_helo_name on the smtp delivery agent.
Oops, that should be myhostname.
> So will the FILTER action accept an empty nexthop (and determine the nexthop
> from the recipient address domain) IF I change the smtp_helo_name? We tested
> this and came to the conclusion that it doesn't work, but I don't have the
> logs anymore, and I couldn't swear we didn't make a mistake and didn't have
> the smtp_helo_name changed at that moment.
There are two loop detection mechanisms. You override one with []
around the next-hop domain. This mechanism is based on MX lookups.
You override the second one with myhostname, or a non-standard TCP
server port. This mechanism is based on comparing the server's
EHLO/HELO reply with the client's myhostname.
Wietse
