First time setup of the Internet Mail Service on Exchange 5.5 SP3. Client is hosting mail, ISP is hosting DNS. Connection type is a DSL router NAT enabled(?) and port 25 opened up (?). Pinging the mail server by name returns the IP address of the router. Is this OK or should the mail server have a real IP? (has an internal IP 192.168.x.x).<br>Telnet to port 25 returns proper message.<br>My problem is that outgoing mail works, but incoming does not. I have watched the inbound ques but nothing makes it. I thought the server side config was pretty straightforward.<br>Any ideas would be greatly appreciated as this is certainly not my expertise.<br><br>Thanks in advance<br><br>Al <p>Al<br><a href=mailto: atc-computing@home.com> atc-computing@home.com</a><br><a href= > </a><br>