ns1.cid.com has no MX records.
Question and response
Question
dig ns1.cid.com. MX
Answer
The response has no answer records.
Authority
cid.com. 30 SOA ns1.cid.com. hostmaster.cid.com. 2026020502 10800 3600 604800 30
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0