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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

ALSO: at $DAYJOB$ there is a quota system ... so even at the point at
which the connection is opened the receiving MTA will not know how many
RCPT TO commands will be accepted, because the quota may get used up by
other parallel connections ... (if it didn't work that way, you may be
able to see what the spammers would do to work around the quota limits)

- -- 
richard                                                   Richard Clayton

Those who would give up essential Liberty, to purchase a little temporary 
Safety, deserve neither Liberty nor Safety. Benjamin Franklin 11 Nov 1755

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