If there is not such a feature on the road map, may I suggest having an option to allow the local controller to connect to a local SMTP server within the network?
From what I have observed with the email generated for the local controller, the emails are originated from amazonses.com. This does make sense for the manage.alta.inc. I am questioning why for the local controller.
Email the controller needs to send out have to connect to the internet to then be received from the internet to the SMTP mail server. I am asking if it is possible to avoid the hop externally.
I would interested in that as I have custom certs but from Let’s Encrypt and my own Certificate Authority as well as custom domains that are only defined within the local network (not the interent)