On Tue, 19 Nov 2002, David Woodhouse wrote:
> > Yes. Exim isn't designed that way. You can't even do ETRN properly if
> > you leave messages on Exim's queue, because Exim doesn't keep queues
> > of mail on a per-host basis.
>
> Even if it did, that wouldn't really be sufficient for TURN. You'd actually
> want something like:
> foreach(mail in the queue)
> foreach(recipient of that mail)
> foreach(MX record for that recipient's domain)
> // (which is higher-priority than us for that domain)
> foreach (A record for that MX record)
> if (IP == connected IP)
> send mail.
>
> I don't fancy implementing that :)
Neither do I, but what I meant by "keep queues of mail on a per-host
basis" was that in an MTA designed for this, it would already know which
message/address is destined for which dial-in host, and wouldn't have to
go through all that logic.
Of course, if you use Exim to save messages in BSMTP format in files on
a per-host basis, you are in fact implementing just that.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
