24 Oct 2021, 05:17

@SCoccia the configuration for your domain doesn't depend by us but it depends on DNS configuration of your domain for the hostname than port and SSL depends on your server configuration.

A test you can do is configure an email client like Thunderbird.
Are you able to configure your domain email domain address in Thunderbird without having warning certificate?

Do you have other PHP application installed with SMTP of your domain that work?

In any case below an example on how I configured host field on my personal domain:

1.jpg

2.jpg

Now you have an example 😉