rdsnet.org has no MX records.
Question and response
Question
dig rdsnet.org. MX
Answer
The response has no answer records.
Authority
rdsnet.org. 3600 SOA ns.rdsnet.ro. dns-adm.rdsnet.ro. 2024070201 1200 180 2016000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0