Blocking files on Hub Transport level

Hi

Another question being asked by our Security team :) Our mail topology is like this:

Exchange 2007 mailbox svr > Exchange 2007 Hub Transport > SMTP Gateway (Trend) > INTERNET

Is it possible to configure Hub Transports to block certain attachments without the Anti-Spam extra? I know this can be done on the Edge, but we don't use that.
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Joe_BuddenAsked:
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rr1968Connect With a Mentor Commented:
DId you try creating a transport rule?
http://msexchangeteam.com/archive/2009/05/11/451274.aspx

Any Exchange aware Anti-virus solution can be used to block specific attachments
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AkhaterConnect With a Mentor Commented:
It can't be done effectively on the HUB server the attachment filter is a Edge role feature

rr1968 is right you can do a transport rule to block but it will work only based on names, if the file is a .exe but was renamed to .ex_ for example this rule will not detect it nor it will if it was zipped

The attachment filtering of Edge has all the above features

http://technet.microsoft.com/en-us/library/bb124399.aspx

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Joe_BuddenAuthor Commented:
Is the transport rule option only for Exchange 2010?
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AkhaterCommented:
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