Hello, My client has mass mailing database hosted on a Cpanel server running exim on a dedicated box. They are running a newsletter and for reputation purposes they want to keep separate mail server, which I propose to be a postfix. Based on my experience, using SMTP auth makes mails injection very slow, and i have to deliver all mails in smallest window possible. I want to by pass SMTP auth and use Exim to postfix relay for faster delivery.
Is this possible? What configuration do I have to change?
