Just had a nasty rootkit virus on out SBS 2003 server. We have had to rebuild it from scratch. During the build time I set up a mail hop forwarding on DynDNS so all mail was send to Gmail accounts. Now I have the server back up and configured (the way it was i think) and removed the mail hop forwarding. My users are able to send emails internal and external but only receive internal mail. Does any one know whats courseing the external mail not to be deleivered?