mail.eurofiber.com has no MX records.
Question and response
Question
dig mail.eurofiber.com. MX
Answer
The response has no answer records.
Authority
eurofiber.com. 901 SOA ns.nscluster.us. hostmaster.nscluster.us. 2026022002 7200 3600 1209600 901
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0