ns3.vivawebhost.com has no MX records.
Question and response
Question
dig ns3.vivawebhost.com. MX
Answer
The response has no answer records.
Authority
vivawebhost.com. 14440 SOA ns1.vivawebhost.com. root.vivawebhost.com. 2026021700 1800 7200 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0