mx.altice.prod.cloud.openwave.ai has no CNAME records.
Question and response
Question
dig mx.altice.prod.cloud.openwave.ai. NS
Answer
The response has no answer records.
Authority
altice.prod.cloud.openwave.ai. 584 SOA ns1.openwave.ai. hostmaster.openwave.ai. 11 28800 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0