SPF, DKIM, DMARC, MX, and CAA configuration
SPF
25
/25
DMARC
30
/30
DKIM
0
/20
MX
10
/10
CAA
v=spf1 mx a:mailgateway.servermk.de ip4:185.97.5.106 -all
v=DMARC1; p=reject; rua=mailto:postmaster@servermk.de
halver01.servermk.de.
letsencrypt.org