On Fri, Jun 26, 2009 at 02:26:14PM -0400, Matthew Snyder wrote:
> Following-up to an older thread:
>
> Wietse Venema wrote:
> > Barney Desmond:
> > > 2009/6/13 Wietse Venema <wie...@porcupine.org>:
> > > > One final input: be sure to give each alias an owner-alias so that
> > > > Postfix will store the result of alias expansion in new queue
> > > > files.
> > > >
> > > > Otherwise, the result of expansion will not be stored. After failure
> > > > of delivery to one local recipient in the expansion, the whole
> > > > alias will be expanded again when delivery is retried, which is
> > > > something that the other recipients will not appreciate.
> >
> > With the equivalent of:
> >
> > /etc/aliases:
> > joe: :include:/hoime/majordomo/joelist
> > owner-joe: someone-who-maintains-the-list
> >
> > The Postfix local delivery daemon will expand the alias joe and
> > store the result in a new queue file. This is triggered by the
> > existence of the owner-joe alias. That alias should always exist
> > with real mailing lists.
>
> Does this hold true for address expansion within
> virtual_alias_domains? In other words, if I have
These are expanded on input as mail enters the queue. The default
expansion limit is 1000 addresses.
>
> virtual_alias_domains = example.com
>
> and then I set up a virtual alias map
>
> bigal...@example.com -> addre...@external.example.org
> -> addre...@external.example.net
> [etc]
>
> such that all of the members of bigal...@example.com are external to
> postfix, do I still need to define
>
> owner-bigal...@example.com
>
> in order to avoid the potential repeat deliveries in case of
> deferrals?
No, but the sender may not get a response to "RCPT TO:" in a timely
manner... your table driver has to be sufficiently fast.
Using virtual(5) is not recommended for large lists of this sort.
You really need a list manager, to change the envelope sender
manage bounces, handle removal requests, ... So the list member
table is typically external.
--
Viktor.
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