fa.gnudb.org has no MX records.
Question and response
Question
dig fa.gnudb.org. MX
Answer
The response has no answer records.
Authority
gnudb.org. 3600 SOA ns1.datahjaelp.net. domains.datahjaelp.net. 2025122703 7200 540 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0