[exim-dev] [Bug 1310] New: Add an option to specify the head…

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http://bugs.exim.org/show_bug.cgi?id=1310
           Summary: Add an option to specify the headers that should be used
                    for DKIM signatures
           Product: Exim
           Version: 4.80
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: wishlist
          Priority: medium
         Component: DKIM
        AssignedTo: tom@???
        ReportedBy: tony@???
                CC: exim-dev@???

The dkim_sign_headers doesn't provide the ability to include headers in the
signature if they are not also present in the message.

This means that it's not possible to use the signing to verify (a) that header
that were not present in the original message have not been added, or (b) that
additional instances of headers that were present in the original message have
not been added. These are very valuable aspects of DKIM signatures.

It would be great if there was either another option that set the headers that
should be part of the signature, or an option that controlled the behaviour of
dkim_sign_headers so that it could be toggled between the weak-security current
behaviour and the strong-security proposed behaviour.


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