It can work at different varying levels of interception giving different options, tagging the mail and dumping the mail with a rejection message or attempt to bounce (never ideal to bounce as you end up with the problem of dealing with triple bounces) are just two options, it can filter directly to Junk folders but you need to use maildir and IMAP mailboxes which would void having Exchange.
It is best used in conjunction with postfix/amavisd-new in my experience, these three websites have info on all of the products I have mentioned :- http://www.postfix.org http://spamassassin.apache.org/ http://www.ijs.si/software/amavisd/ There are web front ends for amavis which allow you to setup access for people to retrieve there own spam but I have not used this myself. To set this up will require plenty of unix knowledge and some lengthy initial configuration, but it is well worth it in the end, in my opinion. For out of the box ease of use I would recommended Mail Sweeper but this obviously costs money. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jose Manzano Sent: 13 December 2006 14:53 To: Exchange Discussions Subject: RE: any anti spam recommendations Hi Neil, How does SpamAssassin work with the individual mailboxes? Does it just tag a suspected Spam Email as Spam then you setup a rule in outlook to move the message , or does it actually move/deletes the message before it gets to the inbox? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Neil Doody Sent: Wednesday, December 13, 2006 8:43 AM To: Exchange Discussions Subject: RE: any anti spam recommendations A unix based front end with spamassassin is good, you mention tech support so if a work out of the box with no requirements for some level of techno savvy configuration then it is probably not your best choice, but it is a very good spam filter. Something that may be more useful for you is to look into greylisting and SMTP banner delaying, greylisting says go away and come back later to the first attempt of mail delivery then allows it in the second attempt, SMTP banner delay just sets a delay before giving the 220 ready for mail banner. Using both of these methods stops spammers who are looking for a quick delivery and most wont come back to attempt a second delivery, stopping the mail coming into your server in the first place. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aristotle Zoulas Sent: 13 December 2006 13:29 To: Exchange Discussions Subject: any anti spam recommendations Hello, We are running Exchange 2003 with a pair of front end GFI Anti virus/Anti Spam servers acting as SMTP relays. The GFI products really are not enterprise grade. They are difficult to manage and have horrible tech support. Furthermore, they do not perform as advertised. We are looking for something much better. So far, we have looked at BrightMail (seems to now be called SMTP Ver. 5) and the MacAfee appliance (Secure Internet Gateway). We are looking for something that does not require constant tweaking and maintenance; something that would give us much better anti spam results. Our mail volume is anywhere from 500,000 to 1 million emails per day, of course 98% of which is----yes you guessed it SPAM! Any feedback from the list would be greatly appreciated. Aristotle Zoulas _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. 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No one other than a properly authorised person made known to you in writing can create a binding obligation on behalf of Remploy by virtue of this email or any other means. *************************************************************** _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with.
