Email Authentication
irondns.net
SPF
passDeclares which servers may send mail for this domain.
v=spf1 mx include:spf1.knipp.de include:spf2.knipp.de ~all
DKIM
noneCryptographic signature on outbound mail (selector: none).
No record published.
DMARC
noneTells receivers what to do with mail that fails SPF/DKIM.
No record published.
Mail Servers (MX)
10 post.knipp.de