smtp.databank.com has no CNAME records.
Question and response
Question
dig smtp.databank.com. NS
Answer
The response has no answer records.
Authority
databank.com. 3170 SOA ns3.databank.com. ipadmin.databank.com. 2026022609 7200 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0