--On Monday, April 14, 2014 07:23 -0700 Dave Crocker
<dcrocker(_at_)bbiw(_dot_)net> wrote:
On 4/14/2014 2:14 AM, John C Klensin wrote:
There is a strong rule in RFC 5321 and its predecessor
forbidding anything but the final delivery system from
rewriting a local-part and it is there precisely because one
doesn't know what sorts of conventions and indicates were
begin used there.
Just to avoid possible confusion about the implications of the
above:
Mediators, like mailing lists, take final delivery and
post a new message. In formal terms, it's legitimate for them
to create a different rfc5322.From field, including one that
looks like some sort of 'rewrite' of the one used by the
original author.
Yes.
john