Hello all

Did not know where to put this as I cannot find a place to put EWS related 
issues.

We have recently moved from exchange 2003 to exchange 2010.  We have a 
program which looks in a specific public folder.

The issue is that this program iterates around all the public folders to 
find the correct one.  

When we connect and do a FindFolders looking at the root, we get the error: 
The mailbox that was requested doesn't support the specified 
RequestServerVersion.

Now the mailbox that we connect with can see all the public folders but I 
know that some are still on the Exchange 2003 box and are linked.  Would this 
cause this issue?

If so can you recommend a better way of getting the public folder we need.

code

    ExchangeService service = new ExchangeService();
    FindFoldersResults findRootFldrs;

    service.UseDefaultCredentials = true;
    service.AutodiscoverUrl(<mailbox>, delegate(string x) { return true; });

    FolderView fview = new FolderView(100);
    fview.Traversal = FolderTraversal.Deep;

    findRootFldrs = 
service.FindFolders(WellKnownFolderName.PublicFoldersRoot, fview);