donweb02.dattaweb.com has no MX records.
Question and response
Question
dig donweb02.dattaweb.com. MX
Answer
The response has no answer records.
Authority
dattaweb.com. 14394 SOA ns3.hostmar.com. root.hostmar.com. 2026022260 28800 7200 2000000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0