mail1050.mkt205.com.
Question and response
Question
dig 50.0.171.207.65.in-addr.arpa. PTR
Answer
50.0.171.207.65.in-addr.arpa. 3600 PTR mail1050.mkt205.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0