thor.dnsnodes.com has no MX records.
Question and response
Question
dig thor.dnsnodes.com. MX
Answer
The response has no answer records.
Authority
dnsnodes.com. 86400 SOA odin.dnsnodes.eu. hostmaster.dnsnodes.eu. 2025110204 86400 28800 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0