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Filtering Infected Email Attachments

By FGiffone ·
Been hit recently with W32/Klez@gen.MM
Per Network Associates, distributors of McAfee, NeShield & GroupShield, they suggested filtering out attachments and their file extension. I have briefly looked through MS Exchange v5.5 help without coming upwith an answer on how to accomplish filtering. Any thoughts would be helpful.

Thank you,
Frank

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Filtering Infected Email Attachments

by Dynamo2003 In reply to Filtering Infected Email ...

You need a content filtering application. Do a search on the web for 'MailSweeper' or 'Mail Essentials.'

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Filtering Infected Email Attachments

by FGiffone In reply to Filtering Infected Email ...

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Filtering Infected Email Attachments

by eabell In reply to Filtering Infected Email ...

The best solution I have found is at www.nemx.com . They offer an excellent product that is part of exchange server and it filters everything we need and also does spam filtering.

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Filtering Infected Email Attachments

by FGiffone In reply to Filtering Infected Email ...

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Filtering Infected Email Attachments

by brasslet In reply to Filtering Infected Email ...

You can't filter by extension using native Exchange tools, at least not in 5.5.

I assume (or at least, I hope for your sake) you're using some kind of anti-virus software to scan your mail. This is the way you'd normally filter mail attachments,though the other suggestions here may work well too. Most of the antivirus products will filter by extension as well as scan for known viruses. I'd consider it a must have.

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Filtering Infected Email Attachments

by FGiffone In reply to Filtering Infected Email ...

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Filtering Infected Email Attachments

by InfosecMN In reply to Filtering Infected Email ...

If you have Groupshield on your Exchange 5.5 server you can filter on extensions. I do and it is very helpful.

First open Exchange Administrator, then highlight the server Groupshield is loaded on. Double click McAfee Groupshield and go to the On Access Tab. Click the Change button on the Scan attachments section. Select the Block Specified radio button on the Attachment blocking section and then click the Select button. Check the Block extensions box and then click the .... button. You will be able to add and delete file extensions. The list is quite extensive. I had to delete usual ones like .doc and .htm etc. It might take a day or two to get it right but it works.

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Filtering Infected Email Attachments

by FGiffone In reply to Filtering Infected Email ...

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by FGiffone In reply to Filtering Infected Email ...

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