Email Authentication
dek.cz
SPF
warningDeclares which servers may send mail for this domain.
v=spf1 redirect=_spfmailgun.dek.cz
DKIM
passCryptographic signature on outbound mail (selector: default).
v=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDx27qQ3kTTUJBXvMSiRb0kc+/15k8ZfRayodg6JNiFRNg+jlF3IllU94WTv8bHhVDB0sTetoJ5bFyP2jj0YshC1Y+jofxdy572bV9cnQ1fG+Gguo+ZUgtCAK8TfSTfhgIKjLsih+v5vetalVvFYLRnaucP9reLim6sxMVz7yh9kQIDAQAB
DMARC
passTells receivers what to do with mail that fails SPF/DKIM. Policy: reject.
v=DMARC1; p=reject
Mail Servers (MX)
10 mx1.dek.cz