Email Authentication

claudeusercontent.com

SPF

pass

Declares which servers may send mail for this domain.

v=spf1 -all

fail

Cryptographic signature on outbound mail (selector: default).

v=spf1 -all

pass

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

v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc-reports@anthropic.com; fo=1