Disable Incoming Mail - DNSONLY
I would like to have this option for the DNSONLY version of cPanel. I don't need incoming mail, only outgoing. So, exim running on ports 25, 465, and 587 doesn't really make sense. If there's no way to close those ports, maybe move them to non-standard ports? Or perhaps have an option in cPHulk to block IPs that try to use the DNS server to relay mail in addition to blocking login/authentication attempts via SMTP? If someone tries to connect to a DNSONLY server for mail, they're obviously spammers.