spf.terranovasite.com has no MX records.
Question and response
Question
dig spf.terranovasite.com. MX
Answer
The response has no answer records.
Authority
terranovasite.com. 3600 SOA ns1-08.azure-dns.com. tnwebsupport.terranovatraining.com. 2016062133 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0