`advfilter`: `<boolean>` ('default =' `0`)::

Enable advanced filters for statistic.
+
If this is enabled, the receiver statistic are limited to active ones
(receivers which also sent out mail in the 90 days before), and the contact
statistic will not contain these active receivers.

`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`: `<boolean>` ('default =' `0`)::

Demo mode - do not start SMTP filter.

`dkim-use-domain`: `<envelope | header>` ('default =' `envelope`)::

Whether to sign using the address from the header or the envelope.

`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.

`http_proxy`: `http://.*` ::

Specify external http proxy which is used for downloads (example: 'http://username:password@host:port/')

`statlifetime`: `<integer> (1 - N)` ('default =' `7`)::

User Statistics Lifetime (days)