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   2 Days ago we started hearing from a lot of clients that they were not receiving their email, upon further investigation we noticed a lot of messages were being returned to the sender with the following error: 557 your email has been rejected because it contains keywords rejected by the antispam filter.  

Upon rebooting our spamfilter server email started flowing again as usual.  After a few hours it started happening again. I've tried loosening up the filter settings without result.  I even upgraded to the latest release 3.5.4.718 ISP edition but it's still happening today.  It will run fine for a few hours and then starts blocking most emails (most are being quarantined) and we are getting a lot of clients calling us with this problem.

Does anyone know of one of the blacklists that might be having trouble and should be removed from the MAPS Servers?  

Any help will be appreciated.  Thanks.

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halowasher Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 November 2007 Status: Offline Points: 4	Post Options Post Reply Quote halowasher Report Post Thanks(0) Quote Reply Topic: 557 error blocking most email now Posted: 02 November 2007 at 2:10pm
	2 Days ago we started hearing from a lot of clients that they were not receiving their email, upon further investigation we noticed a lot of messages were being returned to the sender with the following error: 557 your email has been rejected because it contains keywords rejected by the antispam filter. Upon rebooting our spamfilter server email started flowing again as usual. After a few hours it started happening again. I've tried loosening up the filter settings without result. I even upgraded to the latest release 3.5.4.718 ISP edition but it's still happening today. It will run fine for a few hours and then starts blocking most emails (most are being quarantined) and we are getting a lot of clients calling us with this problem. Does anyone know of one of the blacklists that might be having trouble and should be removed from the MAPS Servers? Any help will be appreciated. Thanks.

LogSat Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 25 January 2005 Location: United States Status: Offline Points: 4104	Post Options Post Reply Quote LogSat Report Post Thanks(0) Quote Reply Posted: 02 November 2007 at 4:42pm
	The most common cause for that rejection are either the entries in the Keyword blacklist or a match by the bayesian filter. If you can zip and email us the section of SpamFilter's logfile for the time around one of such emails (or the entire logfile, along with a list of to/from email addresses for emails in question for that day), we'll be glad to take a look.
	Roberto Franceschetti LogSat Software Spam Filter ISP

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557 error blocking most email now