Michael Thomas wrote:
What about the situation where you have multiple From addresses
and no Sender (or a sender that doesn't correspond to any of the
From addresses)? This might not be legal 2822, but spammers don't
care about that.
The first case isn't legal, it's IMO no job for SSP to specify
what implementations / receivers do with syntactically invalid
mails. Invalid => do what you like (it could be first author).
The second case is legal (ditto Resent-* and domain literals).
I've no idea what to do, nobody here liked the proposal to use
the PRA, many don't like to use the Sender (if it's not one of
the From-domains), "toss a coin" (Message-ID or 1st author or
Reply-To) is unconvincing => SSP has to give up, receivers can
treat it like a single 2882-From with a domain literal.
Frank
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