Re: [ietf-dkim] signature breakage, DKIM Scouts, was 8bit downgrades

> > Well, something's wrong with it.  I checked the signature in Alpine,
> > Thunderbird, and Evolution, and they all agree it's fine.
FYI, I checked copies coming through the list in Apple Mail 4.5, and it 
sees the signature, too.  I was mistaken about T'bird, 3.1.9 on the Mac 
and 3.1.10 on FreeBSD don't.
Just out of nosiness, if your MUA doesn't think this message is signed 
could you drop me a private note saying what it is?  Tnx.
> I went back and looked in more detail.  The problem appears to be that this 
> mailing list wraps the signed body in a MIME multipart/mixed section 
> including both the signed message and the unsigned footer.  Some MUAs look 
> inside the mixed and see the signature, some don't.  For the ones that do, I 
> haven't checked to see how if at all they distinguish the signed part from 
> the unsigned when they show you the message (shades of all the l= arguments.)
> So this tells me that existing mail software doesn't try very hard to recover 
> signatures from modified messages, even for simple changes that don't need 
> any guessing or heuristics to undo.  Why would anyone think that the 
> situation with DKIM would be any different?
> Regards,
> John Levine, johnl(_at_)iecc(_dot_)com, Primary Perpetrator of "The Internet for 
> Dummies",
> Please consider the environment before reading this e-mail. http://jl.ly
Regards,
John Levine, johnl(_at_)iecc(_dot_)com, Primary Perpetrator of "The Internet for 
Dummies",
Please consider the environment before reading this e-mail. http://jl.ly

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