Configuring Advanced Greylisting Settings

The Advanced Greylisting Settings enable you to specify the time that greylisted deliveries are delayed, how long greylist entries are kept, and how long information about good senders is kept.

See About Greylisting for more information about greylists.

Changing these settings without good reason can adversely affect spam detection rates. You should normally only perform these actions on the advice of your normal support provider.

To configure Greylist settings:

From the Policy Center Home page, click SpamLogic Settings. The SpamLogic Settings page appears.
Click the Parameters tab.
Move the pointer over the Greylisting section, and click Click here to change these settings.
Adjust the following settings as required:

Delay initial deliveries for

When a message is received from an unknown sender, the Gateway delays the message by sending the originating server a temporary rejection and requesting that the message be retried after the specified time.

Expire grey listed entries after

When a message from an unknown sender is temporarily rejected, it will be accepted if it is retried within the specified time period.

Expire good entries after

If a greylisted sender successfully retries a message, information about that sender is held for the specified time period. Subsequent messages from the same sender are accepted without being greylisted. Every time a message is received from the sender this timer is reset.

If no messages are received from the sender for longer than the specified time period, messages from the sender are once again greylisted.

Click Save.