On Tue, 23 Oct 2001, Marc MERLIN wrote:
> Running big mail servers, where I get more of those than I'd wish, I've
> thought that the problem would be fixed by having secondary MXes not accept
> MAIL FROM: <> and give back some temporary error, with the hope that
> the sender will eventually connect to the primary server, which can
> authoritavely say "no, I don't know this user" and refuse the mail at SMTP
> time or accept the mail if it is directly deliverable.
> Philip, would you consider that as a feature for exim (whether you're the
> one who writes it or not) or is this misguided?
You could code this in Exim 4's ACLs on the secondary servers.
IMHO it would be better to arrange for the secondary servers to apply
the correct recipient validation, but I realize that this isn't always
possible/easy. [Exim 4 also has "call forward", btw.]
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
