Como aumentar a confiabilidade e qualidade de entrega dos servidores de email – 4 pontos

  • correct PTR record to ensure rDNS (reverse DNS) validation succeeds. (Required)
  • SPF records for the sending domain, and the mail servers DNS name. (Recommended)
  • DKIM records and configuration to sign the outgoing mail. (Recommended, but often poorly implemented.)
  • DMARC records to allow receiving servers to apply your domains SPF and DKIM policies (Recommended, but not often used by smaller volume servers.)

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