I know how to set up a "smarthost" as an outgoing gateway:
But this only works for all domains on the server. I want to set up different outgoing gateways for different domains on the same SM server.
I tried this instead of the Outgoing Gateway setting for outgoing email from users on the SM server for one domain (disabled the Outgoing Gateway), but it does not work:
The email goes out, but it is not directed through the specified external host.
Can someone explain the difference between the two settings for my purposes? I also know that "external host" needs to be setup to use a split domain, with "deliver locally" box checked, but it doesn't explain why the setting doesn't work for outgoing email.
And yes, I stopped / restarted the Windows SM service between changes to settings.
Also, what is the order of precedence if both External Host and Outgoing Gateway are enabled? Thanks!