There are few distinctions to be made. First, authonticity of a user and a machine, in order to validate an email, you need to know which person sent it. I'm not sure how to enable it technically without having an "all…
There are few distinctions to be made. First, authonticity of a user and a machine, in order to validate an email, you need to know which person sent it. I'm not sure how to enable it technically without having an "all…