We are still running exchange 2003 and the users are on Win7 running office 2007. Users are no longer receiving emails from external address. All internal email are working fine. Even sending emails to outside links are working but no external emails coming in. The sender get message not delivered because the remote server is misconfigured. The response from the remote server 550 5.4.1 Reciepient address rejected. Access denied. Any help is appreciated.