ns1.hosterby.com has no MX records.
Question and response
Question
dig ns1.hosterby.com. MX
Answer
The response has no answer records.
Authority
hosterby.com. 600 SOA ns1.hosterby.com. support.hoster.by. 2026021901 900 600 86400 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0