Email Authentication
vox.de
SPF
passDeclares which servers may send mail for this domain.
v=spf1 a mx ~all
DKIM
noneCryptographic signature on outbound mail (selector: none).
No record published.
DMARC
warningTells receivers what to do with mail that fails SPF/DKIM. Policy: none.
v=DMARC1; p=none; rua=mailto:dmarc@rtl.de; ruf=mailto:dmarc@rtl.de; adkim=r; aspf=r
Mail Servers (MX)
10 assur.rtl.de
10 marduk.rtl.de
20 sul.rtl.de
20 sulis.rtl.de