smtpfwdd(8)

NAME

smtpfwdd - SMTP message forwarding daemon.

SYNOPSIS

smtpfwdd [ -d spooldir ] [ -u user ] [ -g  group  ]  [  -s
mailprog ] [ -M maxchildren ] [ -P poll time ]

DESCRIPTION

The smtpfwdd daemon forwards mail messages from a spool

directory to their eventual destinations. It regularly scans the

spool directory in which its symboitic companion program smtpd

stores messages and invokes a mail program (such as sendmail) to

forward them. It is the forward portion of an SMTP store and

foward proxy. smtpfwdd is a standalone daemon, usually invoked at

system startup.

OPTIONS

-d spooldir

Specify a different spool directory. This should be

the same directoy in which smtpd is spooling files. (usually

/usr/spool/smtpd)

-u user

Specify a user to run as. This user must not be

root but should normally be a user that is able to run sendmail

and use the -f option to specify the sender of a mail message.

-g group

Specify a group to run as. Same as <tt>user</tt>

above.

-s mailprog

Specify a different mail program to use to forward

mail. The default is sendmail. Any replacement must be able to be

invoked in the same manner as sendmail with a <tt>-f fromad

dress</tt>, followed by one or more destination addresses on the

command line.

-M maxchildren

specifies how many children smtpfwdd should be al

lowed to spawn at once when delivering mail. Default is specified

at compile time, usually 10.

-P polltime

specifies in seconds how often the master smtpfwdd

process should wake up and check the spool directory for new mail

to forward. The default is specified at compile time, usually 10

seconds.

BUGS

Since sendmail is not normally running as a daemon when

using smtpd and smtpfwdd, one must use cron to periodically in

voke sendmail -q so that queued messages are retried for eventual

delivery.

There are many different variations of sendmail. smtpfwdd

will check and pay attention to the exit status of the sendmail

processes it invokes, possibly retrying an invocation of send

mail. If you aren't using real unadulterated Berkeley sendmail of

a recent vintage, you may need to disable the exit status check

ing at compile time (See option

SENDMAIL_RETRY in the makefile).

sendmail can't handle a . on one line in a message body.

This problem is bypassed in smtpfwdd by giving sendmail the op

tion -oitrue. Again, if you aren't using genuine sendmail, you

may need to disable this at compile time (see option SEND

MAIL_OITRUE in the makefile).

<BR><BR>

NOTES

smtpd and smtpfwdd are also available separately from Ju

niper under quite friendly copyright terms. It can be obtained

using anonymous ftp in the directory ftp://ftp.ob

tuse.com/pub/smtpd

SEE ALSO

juniperd(8),smtpd(8)

AUTHOR

Obtuse Systems Corporation

LICENCE

All rights reserved Use of the Juniper software is covered

by the terms and conditions of the Juniper License Agreement. If

you do not agree to and accept the terms of this agreement then

you may not use the software.

July 19, 1999

smtpfwdd(8)