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DKIM
Security
A digital signature for email that helps prove a message wasn’t forged.
Definition
DKIM adds a cryptographic signature to email so receivers can verify it came from the domain and wasn’t changed.
In plain English
A digital signature for email that helps prove a message wasn’t forged.
Why this matters
Why it matters: It reduces forged emails and phishing that impersonate trusted organizations.
Example
Example: Your mail server verifies DKIM before trusting a message.