postng.cyconet.org has no MX records.
Question and response
Question
dig postng.cyconet.org. MX
Answer
The response has no answer records.
Authority
cyconet.org. 21600 SOA ns1.cyconet.org. webmaster.cyconet.org. 2026021000 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0