Let me try to get rid of the quoted discussion. We ended up with
this so far:
If ":from" is not specified or is not valid, the envelope
sender of the notification message SHOULD be set either to the
envelope "to" field from the triggering message, as used by
Sieve, or to an email address associated with the notification system,
at the discretion of the implementation.
Now you suggest, after we got rid of the fixed address of the notification
system, we should get rid of the fixed envelope "to" field as well and
replace it with "the address of the owner of the Sieve script", which
is what vacation does. The version would be:
If ":from" is not specified or is not valid, the envelope
sender of the notification message SHOULD be set either to the
the address of the owner of the Sieve script,
or to an email address associated with the notification system,
at the discretion of the implementation.
Correct so far?
Sounds good to me. :)
Michael