qfrontend - frontend for executing qmail-qfilter filters

qfrontend(1) is a frontend for running multiple filters by qmail-multi(8) or qmail-qfilter(1). qfrontent(1) can be by setting QMAILQUEUE environment variable.

qfrontend(8) uses qmail-qfilter(8) if USE_QMAILQFILTER environment variable is set, else it uses qmail-multi(8). When calling qmail-multi(8), qfrontend(8) unsets SPAMFILTER and FILTERARGS environment variable to prevent recursive calls to qmail-multi(8).

It first looks at /etc/indimail/filters.d for user defined filter scripts. If filters.d directory is missing, it looks at control file /etc/indimail/control/qfilters for filters to be executed in /usr/libexec/indimail/qfilters. If there are multiple scripts, they will be executed in alphabetical order.

qmail-multi(1) qmail-qfilter(1), qmail-queue(1)