Overview

The Policy module is responsible for processing policy specifications. The main service can be enabled or disabled by clicking the main button Enable/Disable at the top of the page. When disabled, all settings will be ignored.

Quotas

The Quotas section defines the limits on message count and, optionally, cumulative size over time. These settings establish the baseline thresholds for all quota enforcement.

General Settings

• Period Defines whether quota tracking is calculated on a daily basis or on an hourly basis.
• Response Message Defines the message returned to the sender when the quota threshold is exceeded.
• Action When the automatic threshold is reached, then a defer action is applied.

Automatic Quota

Enables or disables the adaptive quota engine. When enabled, the appliance automatically promotes or demotes users between quota levels based on their observed sending patterns.

How does it work?

The system looks at how people usually send emails and automatically sets quotas for each user, so admins do not have to configure it manually all the time. Instead of just fixed rules, it keeps checking what users do and adjust their limits depending on the situation.

The system evaluates the average outbound mail volume over the previous 15 days and automatically moves users between levels according to the following logic:

• • Move up: the user is promoted to the next level when the average outbound volume exceeds a good amount of the current quota.
• • Move down: the user is demoted to the previous level when the average outbound volume falls below of the current quota.

This mechanism ensures that users are assigned to a quota that reflects their typical behavior, reducing false positives while maintaining protection against outbound bursts.

Quota levels

There are five predefined quota levels. The specification defines the following default daily quotas, with corresponding optional hourly values:

If hourly mode is used, the default hourly threshold is one tenth of the daily threshold. Administrators may also define cumulative size limits per level; by default, message size is unlimited.

Quotas Member

In the Quota Members tab, the system will populate the table with all the users and their assigned quota (Only users with a quota level higher than "Normal" will be displayed). Also, administrators can manually assign a specific email address to a selected quota level. This manual assignment overrides the adaptive classification for that user and is suitable when a sender has a known business need that differs from the automatic baseline.

Quota Tracking

In the Quota Tracking page, the system will display all the tracked users and show how many messages a specific user has been tracked. You can filter out the records by performing a Search.

Quotas Override

In the Quotas Override tab, administrators can create advanced rules based on sender and destination criteria, similarly to the previous quota model. This section is intended for granular control and special policy requirements.

Access Control

In this last tab you can set the Access Control policies. Access Control is used to limit access to the service, either by reject or discarding (silently drop) messages received in the matching Policy context. In the table are displayed all the existing Access Control directives for each policy. You can filter out the records by performing a Search.