MS IIS SMTP Relaying email after Exchange Back-end Server is rebooted
Posted on 2006-04-28
I have an IIS SMTP Front-end Relay Server in a DMZ, running on Windows 2003. I also have a back-end Exchange 2003 server on Windows 2003. I am running into an issue when the Exchange Server is rebooted. After the reboot, the relay server queues message and doesn't relay them, until I restart the SMTP service. It might start relaying after a few hours, but I'm not sure. On the Exchange Server I have an SMTP connector, but I don't think that has anything to do with it. I think that's only for outgoing. Is there a setting on MS IIS to reattempt sending to the back-end server? I can not see any settings in the IIS Manager --> local computer --> Default SMTP Virtual Server --> Domains window that shows the smart host forwarding property. I know there are settings for Outbound delivery on the SMTP Birtual Server Properties page.