Len, I'm not going to get into this duel between you and Scott, but part of what you said in your last e-mail left me a bit puzzled. First, I am curious as to exactly what percentage of false positives you personally find acceptable when implementing rules.
Personally, I always shoot for a better percentage than one in 1,000 (.1%), but I am a tad conservative. For instance, I hardly even use the "phrase" filter built-in to iMail, but I am making quite extensive use of Boolean filtering to scan for combinations of "bad words" or phrases. Although this puts a higher demand on the processor, my false/positive ratio is also much better than when I was filtering using simple phrases. Secondly, how can someone request to be whitelisted if they are already blacklisted by your mail server. :-) William Van Hefner System Administrator TheDigest.Com/TelCompare.Com > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Len Conrad > Sent: Sunday, September 14, 2003 12:49 PM > To: [EMAIL PROTECTED] > Subject: Re: [IMail Forum] example: analysis of traffic from charter.com > subscriber networks > > SNIP > > At which point, we don't/can't care that 1 in 1000 PTRs is really a > non-abusive mailer nor that the 1 legit PTR will send us 1 legit > msg among > 10K illegit msgs from the same PTR domain. That PTR is illegitimate by > association, period. > > That "legit" mailer can, upon demand, be whitelisted, but that's their > initiative and work, not the MX's. > > SNIP > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
