ns1.testbed.cm has no MX records.
Question and response
Question
dig ns1.testbed.cm. MX
Answer
The response has no answer records.
Authority
testbed.cm. 10800 SOA dns1.antic.cm. admin.antic.cm. 2025092427 3600 1800 1209656 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0