_spf.melita.com has no CNAME records.
Question and response
Question
dig _spf.melita.com. NS
Answer
The response has no answer records.
Authority
melita.com. 10452 SOA helium.melitacable.com. domains.melitacable.com. 2026022300 28800 7200 2419200 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0