relay.s-net.ro has no MX records.
Question and response
Question
dig relay.s-net.ro. MX
Answer
The response has no answer records.
Authority
s-net.ro. 86400 SOA ns1.s-net.ro. vona.s-net.ro. 2024050618 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0