The logon credentials supplied were incorrect

[jcondurso]

My Org is on four different domains. It is 5.5 with Post 4 SP. Suddenly (we have been running fine for about two years) our users have begun receiving the following error when trying to access calendars on Exchange servers residing in a domain other than their own: "The logon credentials supplied were incorrect. Make sure your username and domain are correct, then type your password again. The Username / domain / password are all correct."

Also, if a users mail server is on one domain, and their NT ID is on another, the get the same error and are unable to access their mailbox.

Does anyone have any ideas?

Thanks!

 

[Killman]

You might want to check you trusts between domains. We had this happen a few years ago and reset the trusts between the domains which fixed the problem.

 

[jcondurso]

We have re-established the trusts, but the problem is still occurring.