You must setup your rDNS with your provider
Some providers have this settings in there control panel, others ask you send them a ticket
make sure you have setup a A record before setting up your rDNS
Setting up a A record is easy , just add your servers hostname (example serv1.hosting.com) as A record
Example: serv1 A 111.1.1.1<----Here your ip address
Some providers have this settings in there control panel, others ask you send them a ticket
make sure you have setup a A record before setting up your rDNS
Setting up a A record is easy , just add your servers hostname (example serv1.hosting.com) as A record
Example: serv1 A 111.1.1.1<----Here your ip address