I came upon this post looking for reasons why an Exchange-originated email message I received was showing the winmail.dat attachment and not its contents. If the 4.5.3 Web UI is supposed to automagically expand TNEF attachments, it's not doing it on my end.

Anything I should be looking at?
Server: RHEL4 ES 32 bit/ZCS 4.5.3 NE
Client: Mac OS X/FF 2.0
pepijn.