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Spam filtering with Exchange server 5.5

By RG11 ·
What options are available with/for exchange server 5.5 for filtering spam. We use outlook on the clients and seem to be getting more and more spam lately.. I will unsubscribe to an email and then I will get the same one later in the day from another unknown user. Are their any built in tools for exchange?

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by Oz_Media In reply to Spam filtering with Excha ...

Stop unsubscribing ! Many SPAMMERS will use the unsubscribe as a confirmation of delivery tool. THey will then compile a list and sell it to other spammers.

There are many SPAM tools, the best will cover Heuristic, RBL and address blocking. Address blocking is becoming less and less effective so most integrated email tools are ineffective and seperate SPAM protection is needed.

I work with Netware tools so I haven't explored Windowsa options but you should find SOME form of protection you can delpoy OUTSIDE your Echange server to stop mail clogging up the server.

Just start searching for server based spam protection, make sure you spend the money to get decent software, much of it is junk or simply blocks addresses, RBL is the most effective but needs to be added to a heuristic scanning system to ensure less false positives in blocked mail.

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by curlergirl In reply to Spam filtering with Excha ...

Two very popular anti-spam products that integrate well with Exchange 5.5 are GFI MailEssentials ( and NEMX PowerTools ( Both companies offer free trial downloads so that you can test them for 30 days to see which works best for you. There are lots of others out there, but very few that work (a) at the server level rather than on each user's desktop; and (b) integrate well with Exchange. Both products intercept the email as soon as it passes through your SMTP gateway so that it never even reaches your user's mailbox if it is identified as spam. Both have various ways you can intercept and handle spam, and both also have additional nice add-ons like using a common email signature disclaimer. Nemx also has a virus scanner add-on, although I've always used Symantec so I don't have any experience with that aspect of it. Hope this helps!

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by JonDixon@Home In reply to Spam filtering with Excha ...

To protect our Exchange enviroment I run Sybari Antigen on all my Exchange Servers plus the Windows 2000 SMTP Gateway. We recently upgraded Sybari Antigen on the SMTP Gateway to include the Spam manager Version 2. Overnight our Spam was cut by 90%.
Its a great I dont need to do anything!!

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by ms7212 In reply to Spam filtering with Excha ...

You may also want to check out Trend Micro's Scanmail for Exchange. They have predefined rules to apply, but you can also go in and set keywords and such. Good luck!

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by RG11 In reply to Spam filtering with Excha ...

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