appmail.etapestry.com has no CNAME records.
Question and response
Question
dig appmail.etapestry.com. NS
Answer
The response has no answer records.
Authority
etapestry.com. 300 SOA bbns.blackbaud.com. hostmaster.blackbaudhost.com. 107 900 600 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0