mail.hostsailor.com.
Question and response
Question
dig 87.80-95.251.8.212.in-addr.arpa. PTR
Answer
87.80-95.251.8.212.in-addr.arpa. 86400 PTR mail.hostsailor.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0