srv-ad-01.voztelecom.net has no MX records.
Question and response
Question
dig srv-ad-01.voztelecom.net. MX
Answer
The response has no answer records.
Authority
voztelecom.net. 86400 SOA ns1.voztelecom.net. root.voztelecom.net. 2026022501 21600 3600 691200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0