Comment 24 for bug 939128

Revision history for this message
Stuart Gathman (stuart-gathman) wrote : Re: validation by yahoo/hotmail fails because of whitespace in h= or header folding issues

From the RFC:

   b= The signature data (base64; REQUIRED). Whitespace is ignored in
       this value and MUST be ignored when reassembling the original
       signature. In particular, the signing process can safely insert
       FWS in this value in arbitrary places to conform to line-length
       limits. See Signer Actions (Section 5) for how the signature is
       computed.

gmail gets it right. dkimpy, live.com, yahoo get it wrong.