jdow wrote:
From: "Jonas Eckerman" <[EMAIL PROTECTED]>
Logan Shaw wrote:
Basically, greylisting has an achilles heel: legit messages
from unknown senders are delayed a long time. This is fine for
Only if you use a long delay.
In my experience a grey period of 3 minutes is enough to stop most spam
and viruses. Especially if you combine it with some anti-dictionary stuff.
<<jdow>> There are indications that this is no longer the case. The
spams apparently come in repeated bursts of four or five about 5
minutes apart. Since it is common for spam to use the same header
values except sometimes "To:" for all messages sent this trips up
greylisting. I ran across a fellow on the FC users list (I believe
it was) that remarked about seeing this and it defeating his greylist.
{^_^}
Hi jdow,
Haven't seen that here. I used to get 300+ spam a day (dns, postmaster,
abuse, my own 10+ year email address) and with greylisting I now get 1 -
3 spams a week, usually 419 spams from free account sites. Most, if not
all, the spam that does get through is marked up by SA and learned as spam.
Oh, and I use a 1 minute greylist time.
Regards,
Rick
