Re: "Last Call" pending exp= (empty) erratum

Julian Mehnle wrote:

> %{h} can never yield an empty <target-name>.

If there's no HELO / EHLO at all, or just the verb without a name, then
%{h} would be empty / undefined.  That's an SMTP syntax error, but 
receivers could nevertheless decide to talk to the client.  

Likely there are more plausible examples how <target-name> could
end up "empty" or otherwise unusable.
[...]

> RFC 4408 implies a result of "Fail" for the above example of yours,
> and this is what Mail::SPF does.

Okay, toss a coin between option 2 and 3 for this erratum ?  Or we
could use Ned's trick, your proposal (option 2) is shorter, and if in
doubt shorter wins.  (Disclaimer, Ned uses that for spelling issues ;-)

 Frank

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