Email Authentication

claude.ai

SPF

pass

Declares which servers may send mail for this domain.

v=spf1 -all

fail

Cryptographic signature on outbound mail (selector: default).

v=DKIM1; p=

pass

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

v=DMARC1; p=reject; rua=mailto:77e00ffe8c9a4e58815efcec52c89399@dmarc-reports.cloudflare.net; fo=1