On Wed, 2010-04-28 at 12:41 -0400, Charles Gregory wrote: > Occasionally I see an e-mail with multiple addresses on the 'From:' > header. (not the envelope) > Do these messages also contain a 'Sender:' header? According to RFC 822 they should do so.
> Can anyone think of legitimate uses for multiple From: addresses? > Or could I just use a rule like: > See RFC822, which allows a message to have multiple authors. It also says that if 'From:' lists more than one author then a 'Sender:' header must be present and that the address in the 'Sender:' header need not be one of thoise listed in the 'From:' header. Having said that, I can't remember seeing multiple addresses on a From: header or a Sender: header. Martin
