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.
SEE ALSO¶
courierpop3d(8)[1],
couriertcpd(8)[2],
authlib(7)[3].
AUTHOR¶
Sam Varshavchik
Author
NOTES¶
- 1.
- courierpop3d(8)
[set
$man.base.url.for.relative.links]/courierpop3d.html
- 2.
- couriertcpd(8)
[set
$man.base.url.for.relative.links]/couriertcpd.html
- 3.
- authlib(7)
[set
$man.base.url.for.relative.links]/authlib/authlib.html