On Sat, Dec 30, 2006 at 03:32:02PM +0100, Steinar H. Gunderson wrote:
> >> I've seen a lot of announcement/verification emails (such as Amazon
> >> orders) which go out from an address that does not exist - presumably
> >> such emails would be blocked by sender verification?
> > Yes. Sender callout verification is basically this:
>
> Note that the mail in the "From" field can be different from the envelope
> given in the SMTP session (which is where a bounce would go).
Yes, Exim on master.d.o is currently set up to verify envelope senders.
It doesn't verify header senders (although such a thing is also possible).
The two addresses may differ. So currently the situation is that if your
Amazon order or whathaveyou comes in with a deliverable envelope sender
address, but an undeliverable header sender address, it'll go through.
(More often than not, however, mails come with both addresses being the same.)
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