On 3/17/25 3:51 AM, Richard Clayton wrote:
In message <7d8f6d49-b974-4392-a7ad-eb23e6d99...@wizmail.org>, Jeremy
Harris <j...@wizmail.org> writes
> On 3/17/25 12:34 AM, Richard Clayton wrote:
>>> PPS: I'm don't understand why this requires the rt= to be limited
>>> to just one address.
>> simplicity ... at the point at which an email is being signed it is not
>> possible to know how many recipients the receiving MTA will accept
after
>> each MAIL FROM
> Absent the LIMITS extension to ESMTP....
you will see that value once the connection to the MTA is open ... which
may well be long after the email was signed
Considering that this already presupposes a signer can deal with the
inherent layering violation of envelope and message, this doesn't seem
very compelling. There are other ways to get around such a problem in
any case.
Mike
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