From: Adrian von Bidder (avbidderfortytwo.ch)
Date: Thu Jun 02 2005 - 01:45:55 CDT

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On Wednesday 01 June 2005 12.27, Simon Waters wrote:

> So far there is no evidence that the greylisting is becoming less
> effective with time, which was one of my concerns (minor concern - the
> obvious solution involves using "rm" regularly).

My concern with greylisting was that the spammers would catch up and start
implementing queueing in their zombies. I have, though, observed that
sometimes DNS blacklists are quick enough even in cases where a spammer
*does* try a second time. So I hope with dnsrbls becoming more
sophisticated - for instance by combining multiple data inputs like dcc,
the spammers won't really be able to catch up.

And I don't really worry about spammers starting to use ISP mailservers to a
great extent - too many people would start to block these (as I am starting
to block hotmails outgoing mailservers as I receive quite a lot spam from
there currently.)

cheers
-- vbi

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