On Wed, 18 Oct 2000, Dr Andrew C Aitchison wrote:
> If the chain reaches a single, non-local address I propose that we accept.
> (interrogating a remote system may cause hang-ups or timeouts, not to
> mention loops).
Why? This is no different to verifying a non-local address in the first
place. Note that Exim does not interrogate remote systems when verifying
remote addresses[*]. It just interrogates the DNS (assuming standard
configuration). And actually, it has to do this anyway, in order to
determine (in some cases) that the address is local.
[*] Some MTAs do do this. I've wondered about it, but it would be
prohibitively expensive, and not useful against hosts that don't
verify at RCPT time.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
