Signal & Syntax · Email deliverability
What Is DKIM?
DKIM (DomainKeys Identified Mail) signs each outgoing email. The receiver checks the signature against a public key in the sender's DNS.DKIM (DomainKeys Identified Mail) signs each outgoing email. The receiver checks the signature against a public key in the sender's DNS.DKIM (DomainKeys Identified Mail) signs each outgoing email. The receiver checks the signature against a public key in the sender's DNS.
Also calledDomainKeys Identified Mail
Example
selector._domainkey.acmecorp.com TXT v=DKIM1; k=rsa; p=…
DKIM in Practice
A valid DKIM signature proves the domain signed the message and the signed parts arrived unchanged. RFC 6376 defines DKIM. Forwarding keeps a DKIM signature intact where A valid DKIM signature proves the domain signed the message and the signed parts arrived unchanged. RFC 6376 defines DKIM. Forwarding keeps a DKIM signature intact where A valid DKIM signature proves the domain signed the message and the signed parts arrived unchanged. RFC 6376 defines DKIM. Forwarding keeps a DKIM signature intact where SPFSPF fails. fails. fails. DMARCDMARC uses DKIM alignment as one of its two tests. uses DKIM alignment as one of its two tests. uses DKIM alignment as one of its two tests.
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