mx.spodhuis.org has no CNAME records.
Question and response
Question
dig mx.spodhuis.org. NS
Answer
The response has no answer records.
Authority
spodhuis.org. 7200 SOA nlns4.globnix.net. hostmaster.spodhuis.org. 2026021158 7200 3600 864000 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0