Hi there, I have a pretty complicated problem that I need help with.
Here is the scenerio. I have 8 locations 7 with Windows 2003 Std Server, 1 with Windows 2008 Std Server. The head office is running 2003 with Exchange 2003. All the branches are connected together via a VPN. They are all DC's. This has been working for many years with little problems.
Suddenly yesterday 3 of the locations started asking for login credentials for Outlook/Exchange. The credential box that came up had the username prefilled in as domain/username. No matter what I did not work. If I logged on as administrator at the remote location email worked. After messing around i discovered that logging in as servername/username allowed the users to login in.
Today I came in and I have a Windows 7 system at a location that did not have any issues not able to connect to Exchange, the user is using Outlook 2010. If I go into account settings and "repair" and try to put the username in again it cannot resolve the name. If I change the server from servername.domainname to the IP of the server it seems to resolve but Outlook 2010 automatically changes it back to servername.domainname and it cannot connect.
I can ping the server using the full servername.domainname address. It seems obvious that the two issues are related, but I am not sure why the other users have not experienced issues yet at this location, and why other locations are working OK as well.
Please any help would be appreciated!