We also use ORF by VamSoft on IIS to pre-process. We do not use the grey listing. We tried it, and it is great at eliminating spam, but it can delay mail for hours, which is a problems for most email users.
Instead of grey listing, we have found ORF's tar-pitting very effective. We set some tests at the ORF level, but don't block on them (because there is no "weighting"). We also have some spam trap email addresses. Fail a test or hit a spam trap and we tar-pit. Instead of sending us 100 spams a minute they can only send one per minute. We can pick up x-records with Declude and not have to re-run the tests on the iMail server, still using Declude to score the messages based on the prior tests. ORF even has a built-in interface for sniffer. It is simpler and preferable to process everything on the iMail server, but when you want to off-load processing to stretch your iMail / Declude investment, this arrangement can do the trick. Paul Fuhrmeister [EMAIL PROTECTED] -----Original Message----- From: Message Sniffer Community [mailto:[EMAIL PROTECTED] On Behalf Of David Waller Sent: Monday, October 23, 2006 5:15 AM To: Message Sniffer Community Subject: [sniffer] Re: SPAM Problems Filippo, We had a similar problem. Due to the huge volumes of spam we found our mail server becoming less able to deal with email. Imail/Declude/Sniffer is expensive in processor terms when processing email and we found the best was to pre-process mail filtering using Greylisting (we used Vamsoft in IIS SMTP but others exist). This has dramatically reduced the load on our server and seems to stop the bulk of spammers and mail harvesters Hope this helps. David ############################################################# This message is sent to you because you are subscribed to the mailing list <[email protected]>. To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> To switch to the INDEX mode, E-mail to <[EMAIL PROTECTED]> Send administrative queries to <[EMAIL PROTECTED]>
