Discard disables capture MTA option

Sieve filter MTA options:  (0-2)
As of Messaging Server 8.0.1.3, if  is set to 0 (the default), then capture and journal actions will be honored for recipients for whom the message has been discaded and thus never actually received the mail.

Setting this option to 1 will cause capture and journal associated with such recipients to be canceled.

See also:
 * reject_disables_capture MTA Option