At 2:15 PM -0800 11/11/98, Alan K. Stebbens wrote:
Many ISPs run filters on all incoming mail. Sometimes, forwarding takes
place because of infrastructure changes, system changes, etc., on a
per-domain basis, especially in a managed messaging environment. Resent
headers should not be inserted because of these system-wide, system-imposed
filtering rules.
I would not expect Sieve to be used in these cases. Existing methods
(for example, .forward) would be used. Sieve is for conditional,
message-based actions, during final delivery, on behalf of users.