Error Messages suddenly appeared on Exchange 2000 IM
We are using the Exchange 2000 IM for some months and it was working properly.
Suddenly it started to send error messages, such as: ‘Exchange Instant Messaging Sign in failure’; ‘The e-mail address is not matching with username and password’; ‘Confirm the typed username and password’.
We have not done any changes in the network.
There are no any errors seen in the event viewer of IM and Exchange Server.
If anybody had this type of problem before and has solved it,