Force port 587 for submission
I would like to have the option to force users to use port 587 for submission, so they can't use port 25 to submit email, and this port 25 is only used for relay between smtp servers.
Thank you for your idea! We will consider this functionality in upcoming releases if it will be popular.
Everyone, please continue voting for this feature if you consider it important.
Maybe something like this, but configurable at Plesk Admin UI: