You can configure the Expiry Timer Value which determines the expiry of a subscriber entry, and the deletion of the expired entries from the Whitelist, Blacklist, Ratelimit, and Redirect lists.

1. Navigate to the required list for which the timer needs to be configured. For example, if you want to configure the timer for the Blacklist, go to: Settings > Blacklist > Configuration.
   You can configure the expiry time for each list separately. Subscribers of a list expire based on the Expiry Timer configuration of the list.
2. In the Expiry Timer Value section, add the value in terms of hours. The default value is 48 hours. This means that a subscriber entry expires 48 hours after its addition to the list. You can specify any value between 48 -1440 hours.

   A warning or notification in the form of an email/SNMP trap is sent out at 03:23 everyday. This notification contains a list expired subscribers. If you have enabled admin > System Settings > Automatic Expiry Delete , then 24 hours after the expiry, all expired entries are deleted from the list. If you have not enabled the Automatic Expiry Delete, the administrator can delete the expired entries from the list. This action cannot be performed by a non-admin user. For more information on enabling or disabling the Automatic Expiry Delete setting, see Configuring Automatic Expiry Delete.