This is the command preline.courier that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
preline - Prepend legacy mbox headers
SYNOPSIS
/usr/bin/preline {program} [arg...]
DESCRIPTION
preline is a wrapper for program. preline is usually invoked from $HOME/.courier.
preline runs program, together with any additional arguments specified on the command
line. program then receives the message being delivered, with some additional headers.
The additional headers come from the UFLINE, DTLINE, and RPLINE environment variables.
These environment variables are initialized by courierdeliver, which reads and executes
commands from $HOME/.courier. These environment variables contain additional headers that
should be added to every message that's delivered to a local mailbox.
preline must be used if program, that is executed from $HOME/.courier to deliver mail,
does not recognize these environment variables. UFLINE contains the From_ line, DTLINE
contains the Delivered-To: header, and RPLINE contains the Return-Path: header. If these
headers are not present in the message that the program reads, you may end up with
excessive resources being consumed by mail loops or by malfunctioning software which
expects to see From_ lines in all messages scheduled for local delivery (such as
procmail).
EXAMPLE
| /usr/bin/preline /usr/bin/procmail
This is the normal way to arrange for procmail to handle local mail delivery.
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