Quanah Gibson-Mount: > --On Wednesday, February 25, 2015 5:55 PM -0500 Wietse Venema > <[email protected]> wrote: > > > Quanah Gibson-Mount: > >> Imagine [email protected] e-mails [email protected], but bob has set up > >> e-mail forwarding to [email protected] > >> > >> [email protected] -> [email protected] -> [email protected] > > > > Standard scenario. > > > >> But then... the e-mail is forwarded outside, to mx.bbc.com. > >> Because the envelope from address is not modified, mx.bbc.com will > >> reject the e-mail because the SPF record tells it to: mx.zimbra.com > >> is not permitted to send e-mail from example.com. > > > > Did you mean: > > [email protected] -> [email protected] -> not([email protected]) -> > > [email protected]? I don't see why that is revelant for this thread. > > No, not at all. Just alice@example -> bob@zimbra -> [email protected]
That is the same scenario. alice@example has no control over how zimbra.com receives mail. Therefore the result can differ only if [email protected] has different paths to forward mail out - one that uses SRS and one that does not. In that case your infrastructure is disorganized, and the scenario is irrelevant for this thread. Wietse
