Email authentication

Email authentication protects your domain against spoofing and phishing by letting receiving mail servers verify that a message really comes from you. Stoïk's External Scan flags domains that are missing or misconfiguring these records.

Configure both:

• What is SPF and how do I configure it?: declares which servers are allowed to send email on behalf of your domain.

• What is DMARC and how do I configure it?: tells receiving servers what to do with messages that fail authentication, and gives you reporting.