mx01.waaf.net has no CNAME records.
Question and response
Question
dig mx01.waaf.net. NS
Answer
The response has no answer records.
Authority
waaf.net. 550 SOA ns1.waaf.net. hostmaster\@ns1.waaf.net. 2025111323 10800 3600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0