[ietf-dkim] Re: ISSUE 1525 -- Restriction to posting by first Author breaks email semantics

[Jim Fenton]

Dave Crocker wrote:
>
>
> Jim Fenton wrote:
>> I do have a problem with just using Sender in the multiple From 
>> case.  Sender has different semantics than From, so using From under 
>> some circumstances and Sender under other circumstances does "break" 
>> the semantics defined in RFC 2822.
>
>
> If the Sender: is the same as one of the From: addresses, why does it 
> matter that the semantics is different?

If it is, that's fine, but it doesn't have to be, and we need to handle 
that case too.

-Jim