vismadns.com has no MX records.
Question and response
Question
dig vismadns.com. MX
Answer
The response has no answer records.
Authority
vismadns.com. 1800 SOA dns1.vismadns.com. dns.cloudflare.com. 2363316173 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0