Re: [Exim] Relaying on SMTP Headers

On Mon, Oct 09, 2000 at 10:10:05AM +0100, David Harrigan wrote:
> Hello,
> Can Exim relay messages based on the contents of an SMTP header?
> I have a requirement to expose a box from behind a firewall, but I wish
> to only allow it to relay messages that have FROM: user@???
> in the header. It still should accept incoming SMTP messages for delivery
> to local users, but should only allow relaying for those users that have the
> appropriate FROM address.
> Do I have the right end of the stick here?

Its puzzling me what security you expect this to provide... People can just
fake the envelope sender and get you to relay what they like...

Michael.