My signature has link to DNS tutorial. It explains PTR record. It is the Reverse Name Service -chapter.
The tutorial explains how to make PTR record. You answered in 60 seconds, which makes me suspect you did not read the tutorial.
Is this PTR set up on your internal private LAN? Then it applies immediately. Otherwise DNS propagation takes between 10 minutes to 48 hours. Same amount of time as for the A and MX etc. records.
I did it at my server with ISPConfig 3 which is co-located at distant hoster. But I tryed to make command via SSH and have error [root@hcp ~]# host 89.218.250.197 Host 197.250.218.89.in-addr.arpa. not found: 3(NXDOMAIN)
I guess the NS records shall be FQDN records, if that's the case, then you missed adding a dot at the end. And the DNS zone in the other screenshot, does it end with a dot?
It depends on what the record shall be. Example: If you want to point it to a domain "ns1.mydomain.tld" and the name of the zone where this record is in is "mydomain.tld", then you can use these two forms: The short form would be: ns1 and the long-form would be: ns1.mydomain.tld. So anywhere when using the long form for a domain name (fully qualified domain name or FQDN), then a dot must be added at the end. If no dot is there, then the DNS server will append the zone name to it. So when using ns1.mydomain.tld (without dot), the DNS server will turn it into "ns1.mydomain.tld.mydomain.tld).
The IP-address you showed in #10 answers to ping, so it looks like it is public routable IP-address at your hosters net. Did you read my DNS tutorial chapter "Reverse Name Service", where tutorial talks about making reverse name service work from the public Interet? I suspect your work so far has been futile. You need to create the PTR record on your hosting providers name servers, not on your own ISPConfig system if your name server is not authoritative for the reverse zone.
Is my PTR record steps done correctly? Thanks for help. Or I can do something else to solve this problem?
Contact them, ask how you can set up PTR record. Meanwhile, to make sure you understand the context, read for example https://en.wikipedia.org/wiki/List_of_DNS_record_types#PTR https://en.wikipedia.org/wiki/Reverse_DNS_lookup https://www.computerworld.com/article/2833006/how-to-setup-reverse-dns-and-ptr-records.html I found those using Internet Search Engines. More can be found with same method. There are books, I learned this stuff from Albitz and Liu book "DNS and BIND". Make sure you actually do need the PTR record, so you are not doing much work with no benefit.
