At 9:40 PM +0200 2003/09/08, Peter J. Holzer wrote:
Anyone who retransmits within the thirty minute timeframe, for
any reason, gets lambasted.
You mean during the "blacklist" time? The sender just gets another
4xx reply and will retry later.
No, in this case the sender gets a personal flame from Vernon.
I'm more worried about senders with multiple outgoing MXs. I've
already[0] observed one mail which took about 16 hours to be accepted,
because the IP adresses of the sender changed apparently at random, so
greylist entries expired several times until it managed to hit the
greylist window with the same sender IP.
Indeed, that can be a serious problem. As can MTAs that use
VERPs, since the envelope sender address will be different every time.
Greylisting most definitely is not without its problems.
--
Brad Knowles, <brad(_dot_)knowles(_at_)skynet(_dot_)be>
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-Benjamin Franklin, Historical Review of Pennsylvania.
GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+ !E-(---) W+++(--) N+
!w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++) X++(+++) R+(+++)
tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)* z(+++)
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