ERROR: No reverse DNS (PTR) entries. For cpanel account with dedicated IP

My server using centos & cpanel

i checked in intodns.com
for myhostingcompany.com no problem

but for cpanel account with dedicated IP, for example clientdomain1.com, get this error message :

Can i solved it by my self,
or
need to contact ISP to set reverse the dedicated ip to domain clientdomain1.com?





in this person post in wht, he said can solved it by himself

but which part is he mean? i check in WHM > Edit DNS Zone > clientdomain1.com already have this line :

 

You need to contact your host to do this for you, unless they've delegated reverse dns to you. If you don't know what that is, they probably haven't.

 

main ip already set reverse to hostname server.myhostingcompany.com before

so i need to set reverse the dedicated ip to domain clientdomain1.com too?
is it each dedicated ip need to set reverse ip like this?

 

1. You should contact ISP to set PTR record for IP:
1.2.3.4 IN PTR server1.domain.com.

2. You should add A record for your domain zone:
server1.domain.com. IN A 1.2.3.4

3. and set your server hostname as server1.domain.com

 

i checked with dkimvalidator.com, the ip sent from server Main shared IP, for example 6.7.8.9, not from 1.2.3.4

i dont know where is IP 1.2.3.4 come from, its from another country IP, maybe its route that intodns.com use

so i still need set PTR record for IP: 1.2.3.4 IN PTR server1.domain.com.?



and in this person post in wht, he said can solved it by himself
which part is he mean in whm/ssh?

 

I think i already solved it, checked with intodns.com no above message again:

- WHM > Exim Configuration Manager > Send mail from account’s dedicated IP address: to On

- then contact ISP request rdns the dedicated ip to mail.clientdomain1.com


is this 2 steps already correct & enough guys? hope will help others that need this information

 

The first step is enough, but you should check if RDNS for the second IP is added.