Glenn:
What we do is simply a
negative weight for newsletters. We review the weights of 20-60 and delete
on 60.
Newsletters typically
fall between 20-40 range and if we find them we simply add them to our negative
email list or for the legitimate ones like Cato or other organizations we simply
whitelist their REVDNS.
Regards,
Kami From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Glenn \ WCNet Sent: Thursday, November 20, 2003 4:53 PM To: [EMAIL PROTECTED] Subject: Re: [Declude.JunkMail] How good does it get? Running JunkMail since May 2002. I've done a
bit of tuning on test weights, am using Sniffer
and several filters, contra-filter, and blacklist of my own
based on false-positives that I find on my own accounts, but I haven't done near
the amount of tuning that some have done. I delete on weight20. I
can't actively track misses and false-positives for all users because of the
sheer volume, over 1.5 million messages pass through here each week. My
.dec logs (on level high) are generally 1 GB in size per day. Running
DLAnalyzer reports that average 89% of total mail volume is deleted per
day, with about 1.5% delivered tagged as "possible spam" (weight14 to 19)
I have had a couple complaints in recent weeks of users not getting newletters
and other "fringe" material. In those cases I do a temporary whitelisting
on their account then do a contra-filter to reduce the weight on the msgs in
question.
It's a sad situation, really. If I didn't
have some way to get rid of the spam, it would sap up huge
amounts of drive space and many users would simply give up on the
battle and abandon their mail accounts.
Glenn Z.
|
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