I have recently migrated my server to a new vps. I setup Cloudlinux, cPanel and all other necessary plugins. But I noticed that some of my domain's webmail isn't working properly, When I send emails it returns with a massage that says "Mail delivery failed: returning message to sender" it's not happening for all cPanel account but few. I need someone who has good experience in cPanel, exim mail server configuration, webmail, dns like DKIM & SPF and if he knows how to configure cloudlinux perfectly that and advantage.
YOU CAN SUBMIT COPY PAST COVER LETTER. LOL. But please don't be robotic :-)