mta1.vodafone.cz has no MX records.
Question and response
Question
dig mta1.vodafone.cz. MX
Answer
The response has no answer records.
Authority
vodafone.cz. 900 SOA ns1.vodafone.cz. ns-admin.vodafone.cz. 2025104677 10800 1080 1209600 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0