Exchange 2010 Transport Rule (block zip files)

[phughes]

Hi Guys,

 

I'm trying to block zip files from coming into our exchange server. I've done a little research and found that this is achieved by using the Transport Rules.

 

I have created a rule with the following;

• Apply rule to messages
  
• when an attachment's content matches text patterns
  
• " *.zip" (without the "")
  
• ".zip"
  
• Delete the message without notifying anyone
  

As far as i'm concerned, this looks correct. I then restart the transport service for good measure and then test it from an external source.

 

The email arrives to my mailbox with a it's zip attachment.

 

Any ideas?

 

Thanks,

Pete

Edited April 29, 2014 by phughes

[joshftw]

You can also use the AttachmentFilter if you've not massively configured it already. Can you run "Get-AttachmentFilterListConfig" and post the result. Assuming it looks fine then use "Add-AttachmentFilterEntry -Name *.zip -Type FileName" to filter out .zip files.

[phughes]

Get-AttachmentFilterListConfig is not a recognised as the name of a cmdlet

 

Add-AttachmentFilterEntry is not recognised as the name of a cmdlet

 

?

[Oaktech]

I've done this to stop the kids distributing flash games... When I remember what I did i'll post it!

[phughes]

When I remember what I did i'll post it!

 

Thanks

[joshftw]

Is that when run on the Exchange 2010 Edge Transport server?

[Arthur]

when an attachment's content matches text patterns

Shouldn't it be the name of the attachment? e.g.

 

New-TransportRule -Name 'Block all .zip attachments' -Priority '0' -Enabled $true -AttachmentNameMatchesPatterns ' *.zip' -DeleteMessage $true

[phughes]

That worked beautifully. There is no attachment name when you use EMC, so I didn't even know that was an option.

 

Thanks all