On Wed, 25 May 2016 13:05:57 +0200 Support SimpleRezo <simpler...@gmail.com> wrote:
> We are expecting a problem when emails are coming from our MX2 with > the SPF plugin, because the SPF test is made on the last "Received" > IP and not the first one (as we can expect for a SPF test). > Does someone has already notice this? Can this be fixed by > configuration? Yes. Don't run a backup MX machine that relays to a primary machine that does spam-scanning. It's more trouble than it's worth, particularly as spammers sometimes specifically pick the worst MX record rather than the best. Regards, Dianne.