bouncesaying.1

linux下qmail的源码 本人加了一些注释

.TH bouncesaying 1
.SH NAME
bouncesaying \- perhaps bounce each incoming message
.SH SYNOPSIS
in
.BR .qmail :
.B |bouncesaying
.I error
[
.I program
[
.I arg ...
]
]
.SH DESCRIPTION
.B bouncesaying
feeds each new mail message to
.I program
with the given arguments.
If
.I program
exits 0,
.B bouncesaying
prints
.I error
and bounces the message.

If
.I program
exits 111,
.B bouncesaying
exits 111,
so delivery will be retried later.

If
.I program
exits anything else
(or does not exist),
.B bouncesaying
exits 0,
so the rest of
.B .qmail
will be processed as usual.

Note that
it is not safe for
.I program
to fork a child that
reads the message in the background.

If
.I program
is not supplied,
.B bouncesaying
always bounces the message:

.EX
   |bouncesaying 'This address no longer accepts mail.'
.EE

.B WARNING:
If you create a
.B .qmail
file to enable
.BR bouncesaying ,
make sure to also add a line specifying delivery to your normal mailbox.
.SH "SEE ALSO"
condredirect(1),
except(1),
dot-qmail(5),
qmail-command(8)