Scott Kitterman wrote:
On Wed, 07 Jan 2009 12:22:24 +0100 Alessandro Vesely
<vesely(_at_)tana(_dot_)it> wrote:
| the key difference between handling aliases (Section 3.9.1) and
| forwarding (this subsection) is the change to the backward-pointing
| address in this case.
The standard literally says that forwarding with a changed return
address is not forwarding. Should that be interpreted like the Baima
Lun saying that a white horse is not a horse?
With a mailing list, a message is sent to the list manager, it is
delivered, and then a new message (with a usually modified body) is created
and sent to the subscriber list.
Why a "new" message? The Message-ID field should be preserved. Even if
the ENVID value should be changed and (positive) DSNs should not reach
the original sender, I wouldn't decorate MTAs with the authorship that
creating a new message requires... Automated body modifications are
also done by clients and MSAs.
So whatever 'forwarding' is, it's pretty clearly not a mailing list.
It was John Klensin who used that term for the action discussed in the
"List" subsection of the standard.
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