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.
d/
--
Dave Crocker
Brandenburg InternetWorking
bbiw.net