spfa.azotel.com has no MX records.
Question and response
Question
dig spfa.azotel.com. MX
Answer
The response has no answer records.
Authority
azotel.com. 600 SOA pdns03.domaincontrol.com. dns.jomax.net. 2026021800 28800 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0