spf1006.agnitas.com has no MX records.
Question and response
Question
dig spf1006.agnitas.com. MX
Answer
The response has no answer records.
Authority
agnitas.com. 900 SOA ns1.plusserver.com. hostmaster.plusserver.com. 2025102103 1800 900 604800 900
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0