Email Authentication
filess.io
SPF
passDeclares which servers may send mail for this domain.
v=spf1 include:spf.mailjet.com a mx include:spf.mail.nullx.me include:_spf.yandex.net -all
DKIM
passCryptographic signature on outbound mail (selector: mail).
v=DKIM1; k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCl6B84tUsznjp4Jnbeb3TQFcLlE28l/3VgykJysW3n4EvC+ohpGDY5QEhGuWL6QS+AlAwPyhAZI/XCitBVt7iB7zFYc8Cxv1g9bdGOIFwWgbwxxYLTQfqdArAfNzjDWKz44ir/BqrLlpBODf8SrLTkTHjp9pjK6z5Cgf40WeggewIDAQAB
DMARC
passTells receivers what to do with mail that fails SPF/DKIM. Policy: reject.
v=DMARC1; p=reject
Mail Servers (MX)
10 mx.mail.nullx.me
11 mx.yandex.net