ns4.citictel.com has no MX records.
Question and response
Question
dig ns4.citictel.com. MX
Answer
The response has no answer records.
Authority
citictel.com. 3600 SOA ns1.citictel.com. ns2.citictel.com. 2025112802 3600 900 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0