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  1. Flowmailer
  2. Deliverability
  3. Email Authentication
  4. SPF

SPF

SPF (Sender Policy Framework): SPF is a method of verifying the authenticity of an email message by checking the sender's domain against a list of authorized sending IP addresses.

  • What is SPF?
  • Why do we encourage using ~all over -all in an SPF record?
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