Recently installed a SBS2000 server with Exch2000. Here is the setup.
exchange server(192.xxx.xx.x) --> DSL Router (192.xxx.xx.x) --> External Router IP (216.xxx.xxx.xxx)
I can definately send out and has been tested several different times. Where the problem lies is, the SMTP receiving. Obviously, the ISP has created an MX record and when I do a nslookup, everything is correct, ie. server name, domain, external router IP and DNS primary and secondary for the ISP in concurrence with the ISP DNS. So of course when the ISP does a test mail, it is received becuase it is within the system so to speak. However, any addresses from anyone outside of the ISP cannot be received by the mail server.
Have I overlooked some configurations? In addition to that, I of course cannot connect to OWA regardless of the mailbox or password. The error displayed is a DNS lookup error. I am willing to sacrifice the majority of my points for this one. We are getting close to mission critical necessity. Thanks in advance.