Internal SMTP server forwarding to my Exchange Server 2003
Posted on 2008-06-17
I have an Exchange 2003 server on another subnet that I need to route some SMTP traffic to from my local subnet. I have a web server on local subnet with route set to the outside interface so I can't route from 10.1.3.30 to 192.168.200.21, because my default route is set to go to the Internet for traffic. My Exchange server used to be local, but now it's moved. I have an ASP job on the web server that sends SMTP mail to my Exhcange internally, but this no longer will work due to the gateway change.
I've decided to build a local IIS SMTP server on my local subnet, but not sure what my next steps should be. SMTP is installed on a server that is on the 10.1.x.x and it can route just fine to 192.168.200.21. Any help in getting IIS SMTP to 'forward' or relay the mail to Exchange would be appreciated.