Exchange 5.5 Can't send email: (000B09AA) 501 Syntax error in parameters or arguments

[ddreams]

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.

[ZER0TECH]

I don't know what might be causing this, but most likely your quickest solution is going to be exporting the users mailbox and recreating the users account.

[ddreams]

Thanks for the feedback.

Is there an easy way to move a users calendar, tasks, contacts and mail to a new user?

[Radical Dreamer]

Export to PST and then recreate the mailbox and import the PST

[ddreams]

Turns out the default return address was set to an invalid email address. I forgot to put the .com at the end of the domain. I hope this information will help some googler in the future.