D052768B.ptr.provps.com has no MX records.
Question and response
Question
dig D052768B.ptr.provps.com. MX
Answer
The response has no answer records.
Authority
provps.com. 14440 SOA ns1.ndchost.com. webmaster.ndchost.com. 2026022300 14400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0