snpp.cvcpaging.com has no MX records.
Question and response
Question
dig snpp.gotdns.com. MX
Answer
The response has no answer records.
Authority
gotdns.com. 1800 SOA ns1.dyndns.org. hostmaster.dyndns.org. 2203448830 10800 1800 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0