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DKIM

A comprehensive collection of questions and answers about email authentication dkim from email marketers, experts and technical documentation.

What DNS record type is used for DKIM?

What does the DKIM 's=' tag represent?

Is 'relaxed' or 'simple' canonicalization more strict in DKIM?

What DKIM tag indicates the algorithm used for signing?

What is the maximum recommended key length for DKIM?

Does DKIM sign the email body or just the headers?

What DKIM tag specifies the domain signing the email?

Can a single DKIM private key be used for multiple selectors?

What is the DKIM 'h=' tag used for?

Does DKIM ensure email privacy?

What DKIM tag defines the canonicalization algorithm?

What is the default value for the DKIM 'c' tag?

Does DKIM prevent email modification in transit?

What DKIM tag specifies the time the signature was created?

Is the DKIM 'v' tag always 'DKIM1'?

What DKIM tag is used to specify the public key?

Does DKIM work independently of SPF?

What is the purpose of the DKIM 'b=' tag?

Can a DKIM record have multiple 'k' tags?

What DKIM tag specifies the body hash?

Does DKIM ensure sender identity verification?

What is the 't' tag in a DKIM signature?

Does DKIM protect against replay attacks?

What DKIM tag indicates the expiration time of the signature?

Is a DKIM record published in the root domain or subdomain?

What is the 'i' tag in a DKIM signature?

Does DKIM require a specific port for verification?

What DKIM tag allows for a specific query method?

Does a missing DKIM record lead to email rejection?

What is the role of the 'l' tag in DKIM?

Does DKIM use a symmetric or asymmetric cryptographic system?

What DKIM tag is used for notes for human readers?

Does 'simple' canonicalization handle whitespace differences?

What DKIM tag indicates the service type?

Does a DKIM signature include the 'From' header by default?

What is the 'q' tag in a DKIM record?

Can DKIM keys be rotated without downtime?

What DKIM tag indicates the signature itself?

Does DKIM sign the 'Subject' header?

What is the recommended DKIM key algorithm?

Does a DKIM record's selector need to be unique per domain?

What DKIM tag indicates the version of the specification?

Does DKIM require DNSSEC to be effective?

What DKIM tag specifies the signed header fields?

Does DKIM protect against email content changes after sending?

What is the purpose of the DKIM 'p=' tag in the public key record?

Does a DKIM record use the 'TXT' DNS record type?

What is the 'g' tag in a DKIM record?

Does DKIM authenticate the 'Return-Path' header?

What DKIM tag denotes the signer's identity?

Does 'relaxed' canonicalization remove trailing whitespace?

What is the function of the DKIM 'x' tag?

Does DKIM prevent email forgery entirely?

What is the purpose of multiple DKIM selectors?

Does DKIM signature verification involve a DNS lookup?

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