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.

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