rs has no MX records.
Question and response
Question
dig rs. MX
Answer
The response has no answer records.
Authority
rs. 3600 SOA a.nic.rs. hostmaster.nic.rs. 2026022327 3600 900 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0