mxgw.ossds.net has no MX records.
Question and response
Question
dig mxgw.ossds.net. MX
Answer
The response has no answer records.
Authority
ossds.net. 300 SOA ns1.ossds.net. noc.ossds.com. 2026012701 3600 7200 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0