How to fill out an application for the registration of PTR records in DNS Rostelecom?

You have a dedicated IP address, domain, and mail server.
For mail servers you need to make a PTR record in the DNS server Rostelecom.
How to do it?
Here is the information www.krdn.ru/help but I don't know how to apply?
IP **.175.218.***
mydomain.ru
September 26th 19 at 06:11
2 answers
September 26th 19 at 06:13
write to the support asking to add this ptr then to a SP
In response, I write that it is necessary to write on domain@ns.kuban.ru using this www.krdn.ru/help but I don't understand how to fill out - kevin.Boe commented on September 26th 19 at 06:16
%% ADD &IN-ADDR for the ip address mapped to the domain in the reverse zone 192.168.88.25 - Kane_Brekke commented on September 26th 19 at 06:19
%% ADD &IN-ADDR xx.175.218.xxx domain.ru so? - kevin.Boe commented on September 26th 19 at 06:22
September 26th 19 at 06:15
Answer I never found. Help

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