inactive.prolocation.net has no MX records.
Question and response
Question
dig inactive.prolocation.net. MX
Answer
The response has no answer records.
Authority
prolocation.net. 14400 SOA ns1.as41887.nl. beheer.prolocation.net. 2026022400 14400 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0