Sorry for the misleading report, but it seems I got it wrong. I suppose the syntax of my command: spfquery -debug=3 -ip=13.48.121.234 -sender=wolterskluwer.com is wrong, and the right syntax is the following: spfquery -ip=13.48.121.234 -sender=wolterskluwer.com -debug Using the right syntax leads to a softfail, which is wrong anyway, because a PASS should be the correct answer. -- Fabio "Kurgan" Muzzi - IZ4UFQ - "Il massimo danno con il minimo sforzo"