On 7 Dec 1999 peter.mee@??? wrote:
> I have been hunting down a specification for the Envelope-To header field
There isn't one. It is not a standard header. It should not be present
in messages traversing the Internet. It is added (conditionally) by Exim
when it puts a message into a mailbox in order to preserve the envelope
information. Other MTAs do the same (or a similar) thing.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.