ns2.anycastdns.cz has no MX records.
Question and response
Question
dig ns2.anycastdns.cz. MX
Answer
The response has no answer records.
Authority
anycastdns.cz. 1800 SOA ns1.anycastdns.cz. root.gransy.com. 2753238583 86400 900 1209600 1800
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0