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From: Craig Sanders (no email)
Date: Mon May 01 2006 - 05:32:34 EDT
On Sun, Apr 30, 2006 at 12:28:34AM +0200, Til Schubbe wrote:
> Is there an option to keep the reason for rejecting the mail
> undisclosed and return the reply code only? I don't want spammers to
> take the opportunity to modify their strategy according to my server's
> reaction.
they dont bother. i doubt if they even care.
a spammer's strategy is spew, spew, spew! the more, the better - just
spew it out and some will get through. any other strategy is more work
for (at best) only a marginal increase in delivery rate.
the spam zombie networks ignore the reject reason, AFAICT. they often
try spamming you from a different location (watch your logs, you'll
see spam attempts for the same addresses come in bursts - first from
one location, then the exact same sequence of recipient addresses from
a different location)....but they'll do that regardless of the reject
reason your MTA gives.
craig
-- craig sanders <> (part time cyborg) my postfix scripts are at http://taz.net.au/postfix/scripts/
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