Hello, one of our clients wants to offer mass mailing services for his clients.
The problem is, that our client wants to send emails with the sender domains of his clients from his own postfix server. As far as I know, some anti spam measure rely on the check, whether the sending e-mailserver is the official MX for this domain. In this case the check will of course fail, causing the emails to be blocked or at least marked as spam. Is it possible to have 2 sending e-mailservers, one for the "normal" smtp traffic and one for the "mass" smtp traffic? Is this just a question of two MX entries in DNS configuration and is there any special to be considered about the postfix configuration? Thanks for any hints & suggestions, Stefan
