util.redbarn.org has no MX records.
Question and response
Question
dig util.redbarn.org. MX
Answer
The response has no answer records.
Authority
redbarn.org. 300 SOA jokulsa.asbyrgi.net. hostmaster.tisf.net. 2026021916 7200 3600 1728000 300
Additional
. 0 OPT ; payload 1500, xrcode 0, version 0, flags 0