I've been asked to move a large organization to Exchange 2003 Native domain. I think that I should move the AD domain to 2003 mode first.
This org has upgraded some 4.0 PDC's and some 2000 DC's to windows 2003. There are no windows 2000/4.0 DC's left. There are a number of sites. Most clients are XP/Office2003. There are some mac's 10.5
The Exchange Public Folders have legacy, Exchange 5.5 groups in their ACLs
Currently there are SID resolution problems in Public Folder ACL's because of some problem with resolving legacy Exchange style "SID's" to AD domain style SIDs
My main concern is that when I upgrade either the Exchange org or the Windows domain to native mode, all of the permissions on the public folders will be broken.
Can anyone advise on the best approach?
Thanks in advance.