positive.work has no MX records.
Question and response
Question
dig positive.work. MX
Answer
The response has no answer records.
Authority
positive.work. 300 SOA dns102.ovh.net. tech.ovh.net. 2020101900 86400 3600 3600000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0