SPF, DKIM, DMARC, MX, and CAA configuration
SPF
18
/25
DMARC
16
/30
DKIM
0
/20
MX
10
/10
CAA
v=spf1 include:_spf-eu.ionos.com ~all
v=DMARC1; p=none; rua=mailto:dmarc@quamp.de; adkim=s; aspf=s; pct=100
mx01.kundenserver.de.