From: Wietse Venema (wietseporcupine.org)
Date: Fri Jun 18 2010 - 07:50:28 CDT

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Carlos Velasco:
> > I think this is a mistake, in the sense that it is a crude work-around.
> > The right solution is keep the "inet_interfaces" settings of Postfix
> > instances *disjoint*, and to never forward mail to port 25 *within*
> > an instance. This keeps things clear and predictable.
> >
> > - Each instance "owns" a separate pool of IPs
> >
> > - Internal forwarding is never to port 25, that's
> > where outside mail comes in, and you never loop
> > it back-in again.
> >
> > - Loop detection is not disabled.
> >
> > Don't fight the system, work within the design.
> >
>
> Sorry, but I don't see your point here.
> I understand the check as to stop a mail bouncing to itself, but this is
> not the case, mail is going from one instance to another. This is,

Then,

- Give each instance its own IP address (use main.cf:inet_interfaces)

- Give each instance its own name (use main.cf:myhostname)

Work WITH the system, or else stop complaining.

        Wietse

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