Hello, looking at spamproc.py line 90: def test_mail(mail, spamc=False, cmd=False): """Test a email with spamassassin.""" score = "0/0\n" orig_code = None spamassassin_result = None returncode = None if cmd: satest = cmd elif spamc: # let spamc process mails larger than 500 KB if ISBG forwards them satest = ["spamc", "-E", "--max-size=268435450"] else: satest = ["spamassassin", "--exit-code"] proc = utils.popen(satest) The limit 268435450 seems to be hardcoded. But 268.435.450 bytes is 268.435kBytes is 268MBytes... So. Why is my 5MB Mail not scanned? Anyway, should satest = ["spamc", "-E", "--max-size=268435450"] not be something like satest = ["spamc", "-E", "--max-size="+sa.maxsize] (note the object sa is not available here I think). Now, for some reason, I now do not get the error ['spamc', '-E', '--max-size=268435450'] error for mail 151 anymore, but instead: ['spamassassin', '--exit-code'] error for mail 151 NoneType: None I have in between deleted the .cache/isbg/track* files Regards, Hendrik