On Tue, 14 Oct 2008, David MacQuigg wrote:
The other filters were already cutting the spam from about
2000 per day per user to less than 20 per day per user. The greylisting
has dropped that to about 2 per day per user - but growing.
What is your timeout window for the sender to try again (min and max)?
5 minutes min - because a lot of legit senders retry in 5 min
6 hours max - because several legit senders were waiting 6 hours to retry
What do you think of Michael's suggestion to make the minimum really long?
Not feasible. Users have enough trouble accepting a 5 minute delay.
"Ok - I sent you an email. Did you get it? No. Hmmm. Let me try again.
Did you get that one. No? Is your email working? ... "
Will that avoid the "weak antibiotic" problem?
Only if the delay is 4 days - to make the spammers actually pay for
their throwaway domains. That certainly won't fly.
--
Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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