SSL Issue for mail server

HI,
I have followed the instruction for multi domain hosting and DNS but on my smtp, the reserse record is not showing (because there is not ptr record).

here is the scenario:
My cyberpanel host: kuhok.net and this is my mail server.

My domain in this host is: lonesock.pro and I have created mail.lonesock.pro as my MX record for this domain (and I don’t want to use kuhok.net or mail.kuhok.net for MX for lonesock.pro).

How to avoid this Reverse record scenario?

Thanks in Advance.

This solution is not right. He didn’t mention the reverse lookup.

Anyone? I am waiting. I need to clear this thing.