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RFC 4871, "DomainKeys Identified Mail (DKIM) Signatures", May 2007

Note: This RFC has been obsoleted by RFC 6376

Note: This RFC has been updated by RFC 5672

Source of RFC: dkim (sec)
See Also: RFC 4871 w/ inline errata

Errata ID: 1461
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Frank Ellermann
Date Reported: 2008-07-04
Verifier Name: Pasi Eronen
Date Verified: 2009-05-14

Section 3.5 says:

       sig-h-tag       = %x68 [FWS] "=" [FWS] hdr-name
                     0*( *FWS ":" *FWS hdr-name )

It should say:

       sig-h-tag       = %x68 [FWS] "=" [FWS] hdr-name
                     0*( [FWS] ":" [FWS] hdr-name )


Confirmed by many occurrences of [FWS] in this section the intention is to allow optional "folding white space" with at most one folding. Compare section 2.3 in this memo for the rationale; more than one folding is known as <obs-FWS> in RFC 2822 and MUST NOT be generated.

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