Over a month ago we upgraded our users from Exchange 2003 to 2007. We have a few linux thunderbird users. So we allowed them connect via imap to the exchange 2007 server. One of our imap users are getting several pop-up messages in Thunderbird throught the day. The error message he would get is "The current command did not succeed. The mail server responded: Command Error. 10". Also, he gets the same error message when deleting email box items.
Anyone, have any suggestions on what we can do?