tinc.ws has no MX records.
Question and response
Question
dig tinc.ws. MX
Answer
The response has no answer records.
Authority
tinc.ws. 300 SOA dns200.anycast.me. tech.ovh.net. 2022070500 86400 3600 3600000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0