.TH preline 1.SH NAMEpreline \- prepend lines to message.SH SYNOPSISin.BR .qmail\fIext :.B | preline \fIcommand.SH DESCRIPTION.B prelinefeeds each incoming mail message through.IR command .At the top of each message it insertsa UUCP-style.B From_line, a.B Return-Pathline, and a.B Delivered-Toline..B prelineis useful for.B procmailandELM's.BR filter ,whichdo not understand the.B qmail-commandenvironment variables..SH OPTIONS.TP.B \-dDo not include the.B Delivered-Toline. You should use this option when therecipient of the incoming mail message is actually under remote control,but was sent here through.B control/virtualdomainsfor manual routing..TP.B \-fDo not include the.B From_line. You should use this option except for.IR command sthat create.I mboxfiles..TP.B \-rDo not include the.B Return-Pathline..SH "SEE ALSO"mbox(5),qmail-command(8)