Re: New "Old-" headers emerging from the horizon

Alessandro Vesely writes:

> Hi,
>
> this draft introduces another pair of headers having a meaning similar to  
> that of Authentication-Results:
>
>     Regardless of success of the BIMI lookup, if a BIMI-Location or
>     a BIMI-Indicator header is already present in a message it MUST
>     be either removed or renamed.
>     https://www.ietf.org/archive/id/draft-brand-indicators-for-message- 
> identification-04.html#name-handle-existing-bimi-locati
>
> I hope this trend won't grow much...

The problem I see here is this part:

# If the original email message had a DKIM signature, it has already been
# evaluated. Removing the BIMI-Location header at this point should not
# invalidate the signature since it should not be included within it per this
# spec.

It's fairly simple to adjust the headers upon receipt, in submit.C, where  
all the other headers are renamed to Old-.

But then that's what the mail filter will see.

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