actually Viktor this signed by: header requires DKIM authentication so when mails are sent from many servers on the same domain then their signatures are different but having the same signed by: header means that they are authenticated from a single domain and this do not requires dkim to be set up in all the servers entry in a single server is enough.
On Sat, Jul 14, 2012 at 6:15 PM, Viktor Dukhovni <[email protected] > wrote: > On Sat, Jul 14, 2012 at 06:09:32PM +0530, achal tomar wrote: > > > ok please tell me how to do this with postfix. > > Send a message with a "Signed-By: example.com" (use your actual > domain name) header. Postfix will not delete this header. > > There is no reason to insert such headers of course, they are neither > seen by users nor taken into account by email delivery systems. Just > a waste bits. > > This thread is also devolving into a waste of bits. If you want > detailed help, you need to ask a detailed question, that starts > with explaining the real goal you want to achieve. > > What purpose would be served by a "Signed-By:" header added to your > messages. There must be some utility in these headers, please explain > what that purpose or utility is. > > -- > Viktor. >
