SPF, DKIM, DMARC, MX, and CAA configuration
SPF
25
/25
DMARC
16
/30
DKIM
0
/20
MX
10
/10
CAA
v=spf1 +mx include:mailgun.org -all
v=DMARC1; p=none; pct=100; rua=mailto:dmarc-rua@xxoo.ws
0xdc.xyz.