SPF, DKIM, DMARC, MX, and CAA configuration
SPF
25
/25
DMARC
30
/30
DKIM
0
/20
MX
10
/10
CAA
0
/10
v=spf1 ip4:217.86.134.241 ip4:212.63.145.48/29 ip4:212.223.29.84/30 ip4:212.223.160.180/30 include:spf.clustermail.de -allv=DMARC1; p=reject;mail01.24904.serviceprovider.de.