Starting to get the following error: You do not have permission to send to this recipient. For Assistance, contact your system administrator. <your domain.com> #5.7.1 smtp;550 5.7.1 Unable to relay for user@externaldomain.com The users that are sending the messages are sending them to an external email address. Sometimes if you wait a day or so then the messages will start going through. Running Exchange 2003 sp1. Thanks
