Re: [tdf-discuss] removing mailing list prefixes?

Hi,

M. Fioretti wrote on 2012-08-02 11:09:
> > This would be helpful in several ways, like DKIM and other e-mail
> > >signing tools don't break, plus it looks much better in the mail
> > >overview.
> Florian, may you provide concrete examples or links to read to know
> more? I'm curious, because I had never heard of this problem.

in fact, while thinking again about it, I stumbled across a mistake in 
my asumption: If we leave the footers intact (which we really should), 
then DKIM will break anyways, as the message content has been modified.

The problem with DKIM (and PGP, S/MIME and the like) is that the message 
content is signed, i.e. normally at least the message body and the 
message prefix, sometimes also more header fields, like sender, date, 
time and the like. In DKIM you can configure what to sign.

If the message content is modified, e.g. by adding footers, or by 
prefixing the subject, those signatures usually break, as the message 
has been modified.

So, while the problem as explained is existing, the solution is not only 
to remove prefixes... :) Mea culpa.

Florian

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