mta1.vetta.net has no MX records.
Question and response
Question
dig mta1.vetta.net. MX
Answer
The response has no answer records.
Authority
vetta.net. 3600 SOA pns21.cloudns.net. noc.vetta.net. 2026022605 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0