SPF, DKIM, DMARC, MX, and CAA configuration
SPF
18
/25
DMARC
22
/30
DKIM
0
/20
MX
10
/10
CAA
v=spf1 mx a include:spf.nl2go.com ~all
v=DMARC1; p=quarantine; pct=100
smtpin.rzone.de.