How to prevent an IP from being blacklisted |
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hbr 
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Joined: 27 August 2007 Status: Offline Points: 2 |
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 Topic: How to prevent an IP from being blacklistedPosted: 27 August 2007 at 9:18am |
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I would like some IPs would be never blacklisted, but emails from them would by scanned. What shall I do?
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Desperado
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Joined: 27 January 2005 Location: United States Status: Offline Points: 1143 |
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Posted: 27 August 2007 at 11:06am |
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If they are being black-listed by dnsbl servers, then you may have an impossible issue. If they are black-listed by either you honeypot emails or the ip-cache then there is a setting in the INI file: DoNotAddIPToHoneypot=x.x.x.x,y.y.y.y,z.z.z.z It is not clear (to me) how many entries you can put in that list however.
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The Desperado
Dan Seligmann. Work: http://www.mags.net Personal: http://www.desperado.com |
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hbr
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Joined: 27 August 2007 Status: Offline Points: 2 |
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Posted: 28 August 2007 at 4:40am |
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It is a little bit different situation. We use SF as a mail filter in front of our mail server. But we are not satisfied with % of spam filtered, so we are trying a supplement solution. The new solution is in front of SF server.
Sometimes an email pass through and is recognized by SF as spam. And SF places our new antispam filter's IP in blacklist cache.
So I need an IP would never be blacklisted by SF.
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Desperado
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Joined: 27 January 2005 Location: United States Status: Offline Points: 1143 |
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Posted: 28 August 2007 at 9:29am |
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My answer still applies. The DoNotAddIPToHoneypot= will prevent the first servers IP from beitn added to the IPCache. We have a backup server that would have the same issue you describe and this is how it is solved.
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The Desperado
Dan Seligmann. Work: http://www.mags.net Personal: http://www.desperado.com |
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LogSat
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Joined: 25 January 2005 Location: United States Status: Offline Points: 4106 |
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Posted: 28 August 2007 at 6:10pm |
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hbr,
Please also note that if SpamFilter does not "see" the original IP address of the sender, many of the filters used by SpamFilter will not work correctly. Somem may miss spam emails, and some others, like the SPF filter, will incorrectly mark good emails as spam as the sender' IP will not match the actual IP seen by SpamFilter. |
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