Email Authentication

sslip.io

SPF

pass

Declares which servers may send mail for this domain.

v=spf1 include:_spf.protonmail.ch mx -all

none

Cryptographic signature on outbound mail (selector: none).

No record published.

pass

Tells receivers what to do with mail that fails SPF/DKIM. Policy: reject.

v=DMARC1; p=reject

10 mail.protonmail.ch

20 mailsec.protonmail.ch