http://bugs.winehq.org/show_bug.cgi?id=19781
--- Comment #22 from Hans Leidekker hans@meelstraat.net 2009-10-22 02:17:49 --- Perhaps you demoed outlook in rpc over https mode? In which case ntlm authentication works fine. I agree that secure rpc's likely have not worked before. At least I can't find the code to build all of the corresponding packets.
I found this old perl implementation, perhaps it's useful: http://cpansearch.perl.org/src/UMVUE/DCE-RPC-0.11/lib/DCE/RPC.pm