183178068123.ctinets.com has no MX records.
Question and response
Question
dig 183178068123.ctinets.com. MX
Answer
The response has no answer records.
Authority
ctinets.com. 3600 SOA ns1.hkbn.net. sysadm.ns1.hkbn.net. 2026012801 3600 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0