smtp.servconfig.com has no CNAME records.
Question and response
Question
dig smtp.servconfig.com. NS
Answer
The response has no answer records.
Authority
servconfig.com. 5270 SOA ns1.servconfig.com. machinemessages.forum.inmotionhosting.com. 2025111000 14400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0