How to Control incoming SMTP mail

[cytexone]

Hello Everyone,

We are in the process of migrating to a third party spam protection service for our customers. They are going to be the primary MX records for the domains on our server.

How do I configure in WHM/Exim the ability to only accept incoming mail from certain hosts. Basically I don't want other servers than the ones I specify to be able to send mail to my CPANEL/WHM Servers.

Thank you in advance.

Dan

[AndyReed]

SSH to your box, then create whitelist, blacklist and denyhostlist files on your server. Login to WHM >> Service Configuration >> Exim Configuration Editor >> Advanced
and insert directives in the first box to tell Exim using these files.