Hi,

I recently changed the name on a mailbox and now it cannot send mail. This is the only user that has this problem. When the user tries to send mail, he gets the following error:

3501 (000B09AA) 501 Syntax error in parameters or arguments

I have removed the Exchange account from his computer via Mail Control Panel and readded it to no avail.

I have also double checked to make sure the mailbox is associated with the correct NT account.

I'm running Exchange 5.5 Service Pack 4 and Windows 2000 Server Service Pack 4.

What's the next step in troubleshooting?

Thanks for your help.