Kevin A. McGrail wrote:
If you can't reject during the initial SMTP phase, then your NDR's of
spam,
with their possible forged envelope addresses, will also be spam. So,
if you
can't drop at the initial conversation, or it is relayed from a backup
MX, it
is your message, and your problem. Just don't generate NDR's. If you
can't
return at SMTP, you will need to drop it.
We'll politely disagree because I am doing my best to reject mail
including having backup servers query primary servers for valid email
addresses but when the primary server is down, we MUST queue mail up on
our servers. If people choose to view that as us being the source of
SPAM, then they are negating the entire point of having backup MX's for
when stuff hits the fan.
Is 'your' queue better than everyone else's? Why not do a 4xx tmpfail
if your address check temporarily fails? Any real MTA should be
prepared to queue and retry.
--
Les Mikesell
[EMAIL PROTECTED]
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