mail.garza-mgmt.com has no CNAME records.
Question and response
Question
dig mail.garza-mgmt.com. NS
Answer
The response has no answer records.
Authority
garza-mgmt.com. 10800 SOA ns1.bspconsults.com. brentp35900.yahoo.com. 2025081500 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0