DKIM (DomainKeys Identified Mail)
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DKIM is an email authentication protocol that adds a digital signature to outbound messages, allowing receiving servers to verify that the message was authorized by the sending domain and was not altered in transit.
- Operational aspects:
- Implemented via DNS and configured within the ESP.
- Signatures are validated by the receiver, contributing to trust signals.
- Why it matters:
- Required for strong deliverability posture and DMARC enforcement.
- Helps mitigate spoofing and phishing attempts that misuse your domain.
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