I have tried to use the trusted black list to provide an IP filter of sorts. I use a spam service and can guarantee all valid email will come from 2 networks. I have my own DNS act as a black list that has only this range as valid. Everything else dropped.
I can't use the obvious router filter for not all customers use this service ($$$). Oh and because the iMail server has a few IP addresses when mail hits the 'other' IPs it avoids the trusted blacklist and spam still leaks in. So having your own (kludged) blacklist is the only sure way to know you can drop mail on contact so to speak. Ian -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of R. Scott Perry Sent: Thursday, June 10, 2004 6:22 AM To: [EMAIL PROTECTED] Subject: RE: [IMail Forum] Trusted Blacklists >Secondly, in the case of the xbl specifically, I know it attempts to >track dynamic ip ranges on the net. I do not want people using >direct-to-mx email to me. That is what a real mail server is for. >They can relay through their isp (like they are supposed to). FWIW, that's one of the areas with the most false positives -- I haven't heard of a single spam database yet that does a decent job of detecting dynamic IP ranges. Most will not even remove static IPs when they make a mistake! -Scott 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/
