int.alvernia.com has no MX records.
Question and response
Question
dig int.alvernia.com. MX
Answer
The response has no answer records.
Authority
alvernia.com. 3600 SOA ns1.jchost04.pl. hostmaster.alvernia.com. 2026020903 3600 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0