mail.updatesystem.se.
Question and response
Question
dig 184.128-26.74.67.195.in-addr.arpa. PTR
Answer
184.128-26.74.67.195.in-addr.arpa. 86400 PTR mail.updatesystem.se.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0