I am trying to get a smtp relay that I set up on a windows 2008 r2 server to work, and not having luck. Installation went fine, it is the actual configuration of the relay parameters that may be my issue. This relay is to be used by internal IoT devices for notifications, etc, outbound only. Destination is smtp port on hosted Exchange server offered by mail provider.
I'm attempting to use TLS encryption, with account login for the destination smtp server. Most of the settings are pretty straightforward, but the section on domain information is not clear to me, as this is an internal server xxx.local.
Anyone out there familiar with this scenario?
There is a possibility that my mail provider is not accepting my mail, but I don't have any way of knowing for sure where I stand. Just know that these mail tests from one of the devices is not going out.