dnx1.vodafone.net.tr has no MX records.
Question and response
Question
dig dnx1.vodafone.net.tr. MX
Answer
The response has no answer records.
Authority
vodafone.net.tr. 300 SOA ns1.vodafone.com.tr. dnsadmin.vodafone.com.tr. 2026022701 28800 7200 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0