How to configure outbound SMTP → gmail?
got a IoT vlan, 172.16.100.0
got a Raspberry Pi Zero-Wifi that takes a photo of a meter reading (analog) and then needs to email it to me.
All works when I do an allow any/all outbound, but I want to close this network for no outbound/WAN access except for this one host for this one purpose.
I’ve created a alias with the following ports (587, 465, 993, 995)
Created a rule that allows this alias to any outbound ip, but email sending via smtp.gmail.com is still failing,