Email Authentication

scientificamerican.com

SPF

pass

Declares which servers may send mail for this domain.

v=spf1 -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; pct=100; rua=mailto:re+quoqtmcntk0@dmarc.postmarkapp.com; ruf=mailto:nico.halpern+ruf@sciam.com; sp=reject; aspf=r; adkim=r;

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