DNS PTR record when domain on shared IP address

dedicated-serverdomain-name-systemptr-recordreverse-dnsshared-hosting

I own a typical shared IP hosting plan and domain.
I can modify the DNS of the domain from the control panel.
The mailserver shares the same IP address, so my typical DNS config is:

www.mydomain.com   A      -> myIP
mydomain.com       A      -> myIP
ftp.mydomain.com   A      -> myIP
mail.mydomain.com  A      -> myIP
mydomain.com       MX(10) -> myIP

I read some Q&A on this site where they suggest to add PTR record mainly for mailserver.

I would like to add PTR record to my domain, I have got two questions:

1) can PTR record be added even if the hosting/mailserver are on a shared IP address? Or do I need a dedicated IP.

2) How do I setup PTR record, I mean does it look like A record:

mydomain.com (PTR) -> myIP

Best Answer

You can't create a PTR record for the ip address in your domain name DNS zone. The PTR record needs to be created in the rDNS zone by the owner of the netblock that encompasses your ip address. You'll need to speak to whomever you get the ip address from and ask them to create a PTR record for you.

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