m3.rbc.beauceronsecurity.com has no MX records.
Question and response
Question
dig m3.rbc.beauceronsecurity.com. MX
Answer
The response has no answer records.
Authority
beauceronsecurity.com. 600 SOA pdns05.domaincontrol.com. dns.jomax.net. 2026022407 28800 7200 604800 600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0