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I created this resource website https://dmarcvendors.com dedicated to providing information on DMARC analytic vendors, email authentication, and email security tools.

Yahoo / Google requiring " both " SPF and DKIM to align ???

Two SPF1 Ok?

some confusiton on DMARC setup

ELI5 Setting Up Contact Forms, SPF, SMTP

Enterprise alternatives to Valimail

Yahoo Blocking

Google Workspace SPF record

Proofpoint URLDefense and Hubspot

Is someone trying to hack my account?

This mail has been blocked because the sender is unauthenticated. Yahoo requires all senders to authenticate with either SPF or DKIM.

Mailchimp - SPF Records

I can’t send emails from my Google workspace

Filtered forwarded emails to Yahoo blocked

Weird email issue haven't seen before.

SPF for a subdomain and root domain

Proofpoint enterprise custom API development any recommended vendors?

DKIM Not Aligned - O365 mail flowing outbound via ProofPoint Essentials

Secure Email Gateway question- Email Digest: Non Action = Block?

Office 365 + DKIM + 3rd party email filtering

Receiving error, "451 4.7.5 Temporary error evaluating DMARC policy" from some recipients...

Is Proofpoint having issues?

GoDaddy shakedown?

DMARC and Proofpoint

DKIM not aligned and authenticated

Hi Its Me!

R

Johnsora

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