<div>Hi,</div>
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<div>Occasionally I receive legit email messages that include a "double extension" - i.e. "filename.xxx.yyy" where "yyy" can be several different extensions. The messages are protected with a specific Rights Management system that does this double extension when it is protecting documents that do not have native RMS capabilities (uses some type of encrypted envelope). The problem is that MS seems to eat them - as expected I get a filename warning message in place of the normal attachment but upon retrieving the messages from quarantine they are typically corrupted.
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<div>Is there a way to exempt certain filetypes that are in this format - for example, say something that would see the filename structure "filename.txt.rmh" (regex might be ideal here for different file types) and allow it to pass? I do not want to simply rely on domain-level exemptions if possible as that (to me) would open a big hole in the protection.
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<div>Thanks...</div>