relay.hutman.net has no MX records.
Question and response
Question
dig relay.hutman.net. MX
Answer
The response has no answer records.
Authority
hutman.net. 2560 SOA dns1.hutman.net. hostmaster.hutman.net. 2026022401 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0