Hi unptkon, I have a couple of questions if you do not mind. First, what version of WHD are you running? Second, if you find the ticket that has the error, have you looked under Setup> Email> Incoming email. Select the incoming email account and look for a tab called "Email History." Add the date range for the newest ticket in the system that shows the error and select submit. If you can find the email that generated the error does it have an error attached to it? Third, are these random or coming from the same client/clients? Thanks for answering these.