I have a problem with syncing my Exchange 2007 calendar with my Pre 3.

I use a local Exchange server, which is available in the local W-LAN. On my Pre3 it was possible to add the account (and it is working), but on my partners not.

There is always the "Unable to validate incoming mail server settings" error.

Anyone an idea how to fix this? We're using the same Exchange Account. Is it possible to copy the setting from the first to the second Pre?