mail.skin-soft.org has no MX records.
Question and response
Question
dig mail.skin-soft.org. MX
Answer
The response has no answer records.
Authority
skin-soft.org. 86400 SOA dns11.ovh.net. tech.ovh.net. 2026022500 86400 3600 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0