spf.wm.net has no MX records.
Question and response
Question
dig spf.wm.net. MX
Answer
The response has no answer records.
Authority
wm.net. 7200 SOA ns.wm.net. dnsmaster.wm.net. 2026012901 28800 7200 604800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0