mx.anachron.com has no CNAME records.
Question and response
Question
dig mx.anachron.com. NS
Answer
The response has no answer records.
Authority
anachron.com. 40 SOA ns1.sqr.nl. hostmaster.anachron.com. 2026011200 16384 2048 1048576 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0