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# 15. Bounce management

Sympa allows bounce (non-delivery report) management. This prevents list owners from receiving each bounce (1 per message sent to a bouncing subscriber) in their own mailbox. Without automatic processing of bounces, list owners either go mad, or just delete them without further attention.

Bounces are received at mylist-owner address, which should be sent to the `bouncequeue` program via aliases :

    	\samplelist-owner: "|/home/sympa/bin/bouncequeue \samplelist"

`bouncequeue` (see , page ) stores bounces in a `~sympa/spool/bounce/` spool.

Bounces are then processed by the `bounced.pl` daemon. This daemon analyses bounces to find out which e-mail addresses are concerned and what kind of error was generated. If bouncing addresses match a subscriber's address, information is stored in the Sympa database (in subscriber_table). Moreover, the most recent bounce itself is archived in `bounce_path/mylist/email` (where bounce_path is defined in a `wwsympa.conf` parameter and email is the user e-mail address).

When reviewing a list, bouncing addresses are tagged as bouncing. You may access further information such as dates of first and last bounces, number of received bounces for the address, the last bounce itself.

Future development of Sympa should include the automatic deletion of bouncing addresses.

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