ns3.qweb.co has no MX records.
Question and response
Question
dig ns3.qweb.co. MX
Answer
The response has no answer records.
Authority
qweb.co. 3600 SOA ns1.qweb.net. hostmaster.qweb.nl. 2021051302 3600 3600 604800 14400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0