On Premise Hub Transport Rule

Can a Hub Transport rule block a restricted file extension (ie.. exe, com, mov, msp, js, vbe, etc...), if it is zipped? Will the hub transport expand the zip file to view the contents so that it will detect those zipped restricted extensions.
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timgreen7077Exchange EngineerAsked:
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Amit KumarCommented:
I think transport rule will not check zip file what it contains but you can create rule to block/delete attachments with extensions.
To block zip files with specific extension enable Anti Spam feature on Hub transport.

Please refer this article  . By default Anti-spam features are disabled on Hub server as Edge transport is there to check spamming. So if you have specific requirement for internal mails or anything you can do it with Anti Spam on Hub.

Another thing did you test once if you attach a zip file containing exe file does not get blocked in OWA or outlook. What I believe Exchange is enough intelligent to protect such files itself

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AmitIT ArchitectCommented:
You didn't mentioned the Exchange version you are using. Also note, Exchange Anti-spam provided by MS, is basic level of AV/AS. If you are looking for advance level, you surely need to look for third party tools like Brightmail or TrendMicro or MailMarshal. I worked on all of them and Brightmail is the best.
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