mail.virtualbranchservices.com has no CNAME records.
Question and response
Question
dig mail.virtualbranchservices.com. NS
Answer
The response has no answer records.
Authority
virtualbranchservices.com. 300 SOA dns2.p07.nsone.net. domainadmin.firstdata.com. 763100758 1200 180 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0