SPF, DKIM, DMARC, MX, and CAA configuration
SPF
18
/25
DMARC
30
/30
DKIM
0
/20
MX
10
/10
CAA
v=spf1 include:mailbox.org ~all
v=DMARC1;p=reject;rua=mailto:dmarc-report@amenthes.de
mxext3.mailbox.org.
mxext2.mailbox.org.
mxext1.mailbox.org.