oss-core.net has no MX records.
Question and response
Question
dig oss-core.net. MX
Answer
The response has no answer records.
Authority
oss-core.net. 3601 SOA ns1.m2core.com.au. root.m2core.com.au. 2026020501 10800 3600 604800 3601
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0