[horde] Anyone else having trouble with decoding s/mime?

[Michael M Slusarz]

That message is terribly broken.  It *claims* to be a multipart/signed  
message, but it only contains the SMIME signature.  The actual signed  
data is nowhere to be found.

In other words, this is the structure of your message:

multipart/signed
   application/pkcs7-signature

However, this is NOT what RFC 2633 requires.  From Section 3.4.3 of  
that document:

    The multipart/signed MIME type has two parts. The first part contains the
    MIME entity that is signed; the second part contains the "detached
    signature" CMS SignedData object in which the encapContentInfo
    eContent field is absent.

Thus, this is the structure necessary for multipart/signed:

multipart/signed
   [MIME data part]
   application/pkcs7-signature

Your MUA is badly broken.

michael

___________________________________
Michael Slusarz [slusarz at horde.org]