mail0.everett.org has no CNAME records.
Question and response
Question
dig mail0.everett.org. NS
Answer
The response has no answer records.
Authority
everett.org. 3254 SOA ns1.everett.org. root.everett.org. 2023070201 86400 14400 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0