SPF, DKIM, DMARC, MX, and CAA configuration
SPF
25
/25
DMARC
30
/30
DKIM
0
/20
MX
10
/10
CAA
10
/10
v=spf1 a mx mx:pmg.nbiserv.de ip4:46.182.16.0/23 ip4:151.252.51.165/32 ip6:2a02:2970:1000::/64 -allv=DMARC1; p=reject; ruf=mailto:abuse@nbiserv.de; sp=quarantine; fo=1; pct=100; adkim=r; aspf=rpmg.nbiserv.de.pmg.nbiserv.de.digicert.comletsencrypt.org