Use advanced filters for statistic.
+`avast`: `<boolean>` ('default =' `0`)::
+
+Use Avast Virus Scanner (/usr/bin/scan). You need to buy and install 'Avast Core Security' before you can enable this feature.
+
+`clamav`: `<boolean>` ('default =' `1`)::
+
+Use ClamAV Virus Scanner. This is the default virus scanner and is enabled by default.
+
+`custom_check`: `<boolean>` ('default =' `0`)::
+
+Use Custom Check Script. The script has to take the defined arguments and can return Virus findings or a Spamscore.
+
+`custom_check_path`: `^/([^/\0]+\/)+[^/\0]+$` ('default =' `/usr/local/bin/pmg-custom-check`)::
+
+Absolute Path to the Custom Check Script
+
`dailyreport`: `<boolean>` ('default =' `1`)::
Send daily reports.
Demo mode - do not start SMTP filter.
+`dkim_selector`: `<string>` ::
+
+Default DKIM selector
+
+`dkim_sign`: `<boolean>` ('default =' `0`)::
+
+DKIM sign outbound mails with the configured Selector.
+
+`dkim_sign_all_mail`: `<boolean>` ('default =' `0`)::
+
+DKIM sign all outgoing mails irrespective of the Envelope From domain.
+
`email`: `<string>` ('default =' `admin@domain.tld`)::
Administrator E-Mail address.