This section lists options affecting mailbox filters.
FILTER_DISCARD (1, 2, or 3)This option controls whether mailbox filter discard actions cause such discarded messages to go to the bitbucket channel (i.e., be immediately discarded), or cause such messages to go to the filter_discard channel (which will leave them around for a short period before discarding them). The default is FILTER_DISCARD=1, meaning that messages discarded by a mailbox filter are immediately discarded. Setting FILTER_DISCARD=2 causes discarded messages to instead be routed to the filter_discard channel; see Section 16.2.5. Setting FILTER_DISCARD=3 causes messages to be routed to the filter_discard channel as with FILTER_DISCARD=2, however these messages are not added to the PMDF queue cache database, improving performance.
MAX_FILEINTOS (integer)This option specifies the maximum number of folders that can be specified by a mailbox filter's fileinto operator. The default is 10.
MAX_FORWARDS (integer)This option specifies the maximum number of forwarding addresses that can be specified by a mailbox filter's redirect operator. The default is 32.
MAX_LIST_SIZE (integer)This option specifies the maximum number of entries that can be in a mailbox filter's list type. The default is 64.