ns1.infobox.org has no MX records.
Question and response
Question
dig ns1.infobox.org. MX
Answer
The response has no answer records.
Authority
infobox.org. 3600 SOA infobox.ru. tech.infobox.ru. 2024100734 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0