I don't know of a tool that will do that offhand, but I will just suggest that you expand your search to include tools that will work for IMAP and POP servers, since Exchange can provide email via both of those protocols as well as the proprietary Exchange protocols.

In fact, I think that Exchange uses WebDAV on its Outlook Web Access interface, not that I know that it conforms to any established protocol beyond that.
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Bitt Faulk