rns1.ipv6.tolna.net has no MX records.
Question and response
Question
dig rns1.ipv6.tolna.net. MX
Answer
The response has no answer records.
Authority
rns1.ipv6.tolna.net. 3600 SOA ns3.tolna.net. support.tolna.net. 2026030510 21600 7200 2419200 14400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0