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Administrator Options: Bounce Processing

If no member address can be extracted from the bounce, then the bounce is usually discarded. Otherwise, the member is assigned a bounce score and every time we encounter a bounce from this member we increment the score. Hard bounces increment by 1 while soft bounces increment by 0.5. We only increment the bounce score once per day, so even if we receive ten hard bounces from a member per day, their score will increase by only 1 for that day.

When a member's bounce score is greater than the bounce score threshold, the subscription is disabled. Once disabled, the member will not receive any postings from the list until membership is re-enabled. However, they will receive occasional reminders that their membership has been disabled, and these reminders will include information about how to re-enable their membership.

You can control both the number of reminders the member will receive and the frequency with which these reminders are sent.

After a period of time you set during which no bounces from the member are received, the bounce information is considered stale and discarded. The default values are recommended for most lists.

Option Name Description of Options New List Default
bounce_processing Automatic bounce processing. Yes
bounce_score_threshold Maximum member bounce score before the member's subscription is disabled. 5.0
bounce_info_stale_after Number of days with no additional bounces before the member's bounce information is discarded. This number should be increased for lists with little traffic to ensure the list will process bounces efficiently. 7
bounce_you_are_disabled_warnings Number of  warnings a member will receive before their address is removed from the membership list. 1
bounce_you_are_disabled_warnings_interval Number of days between bounce warnings. 7
bounce_unrecognized_goes_to_list_owner Unrecognized bounces are sent to the list owner.  This can be enabled if the list owner wants to track or maintain the memberships manually. No
bounce_notify_owner_on_disable Notify the list owner if a member has been disabled because of bounced messages No
bounce_notify_owner_on_removal Notify the list owner if a member has been removed from the list because of bounced messages No