From: andreas@knobel.GUN.de (Andreas Klemm)
Newsgroups: comp.unix.bsd
Subject: [386BSD] sendmail.cf hack, establish "uucp only" connection
Summary: uucp only connection to a relay host
Keywords: sendmail.cf
Date: 27 Dec 92 23:48:58 GMT
Organization: Andreas Klemm, 4040 Neuss, Germany

Hello !

After hours of trying out different sendmail configuration options
I found a way to tell sendmail to send mail (!local) to a mail host
or relay host specified with the define DR.

The sendmail.cf as being shipped with 386bsd 0.1 didn't work for me.

Internet adresses via the Muucp mailer were treated as local
addresses which couldn't be resolved.

Building a new sendmail.cf from scratch using m4 
(see /usr/src/usr.sbin/sendmail/cf/cf/uucpproto.mc) didn't work
properly, too.

The reason is, that in the machine dependend part of rule zero
(end of sendmail.cf) a line is missing to tell sendmail to send 
internet mail to a formerly specified relay host 
before finally trying to resolve the mail locally.

Below is my sendmail.cf file. Changed or important lines are marked
with ^^^^^^^^^^^^^^^^^^^

Hope it's usefull.
BTW: use it on your own risk ...

Bye
	Andreas Klemm

--
////// Andreas Klemm \\\\\\     /////// andreas@knobel.GUN.de \\\\\\\
private : +49 2137 12609        D-4040 Neuss 21 (Norf), Germany
at work : +49 2173 3964 165     Wiechers & Partner   Datentechnik GmbH
Telefax : +49 2173 3964 222     Abteilung Unix Support, D-4019 Monheim


#
#  Sendmail
#  Copyright (c) 1983  Eric P. Allman
#  Berkeley, California
#
#  Copyright (c) 1983 Regents of the University of California.
#  All rights reserved.  The Berkeley software License Agreement
#  specifies the terms and conditions for redistribution.
#
#	@(#)uucpproto.mc	1.2 (Berkeley) 1/24/89
#	@(#)proto.mc	1.20 (Berkeley) 1/25/89
#
# built by root on Sun Dec 27 19:22:17 MET 1992
# in /usr/src/usr.sbin/sendmail/cf/cf on knobel.GUN.de
#
############################################################
############################################################
#####
#####		SENDMAIL CONFIGURATION FILE
#####
############################################################
############################################################


##################
#   local info   #
##################

# file containing our internet aliases
# Fw/etc/sendmail.cw
# ^^^^^^^^^^^^^^^^^^

# uucp hostnames
DUknobel
CUknobel.GUN.de
DMuucp
DReasix
CReasix
#^^^^^^^^^^^^^^^^

######################
#   General Macros   #
######################

# local domain name
DDGUN.de
#^^^^^^^^^^^^^^^^

# my official hostname
Dj$w

###############
#   Classes   #
###############

# Internal ("fake") domains that we use in rewriting
# CIUUCP BITNET CSNET

######################
#   Version Number   #
######################

DZ1.34


######################
#   Special macros   #
######################

# my name
DnMAILER-DAEMON
# UNIX header format
DlFrom $g  $d
# delimiter (operator) characters
Do.:%@!^=/[]
# format of a total name
# Dq$g$?x ($x)$.
#
# does somebody know a better solution ?
# I want an internet address, no bang path in the From: line
#
Dq$f@knobel.GUN.de ($x)$.
#^^^^^^^^^^^^^^^^^^^^^^^^^
# SMTP login message
De$j Sendmail $v/$Z ready at $b

###############
#   Options   #
###############

# location of alias file
OA/etc/aliases
#^^^^^^^^^^^^^^^^^^^^^^^^^
# wait up to ten minutes for alias file rebuild
Oa10
# substitution for space (blank) characters
OB.
# (don't) connect to "expensive" mailers
#Oc
# default delivery mode (deliver in background)
Odbackground
# temporary file mode
OF0600
# default GID
Og1
# location of help file
OH/usr/share/misc/sendmail.hf
#^^^^^^^^^^^^^^^^^^^^^^^^^
# log level
OL9
# default network name
ONUUCP
#^^^^^^^^^^^^^^^^^^^^^^^^^
# default messages to old style
Oo
# queue directory
OQ/var/spool/mqueue
#^^^^^^^^^^^^^^^^^^^^^^^^^
# read timeout -- violates protocols
Or2h
# status file
OS/var/log/sendmail.st
# queue up everything before starting transmission
Os
# default timeout interval
OT3d
# time zone names (V6 only)
OtMET
# default UID
Ou1
# wizard's password
OW*
# load average at which we just queue messages
Ox8
# load average at which we refuse connections
OX12

###########################
#   Message precedences   #
###########################

Pfirst-class=0
Pspecial-delivery=100
Pbulk=-60
Pjunk=-100

#####################
#   Trusted users   #
#####################

Troot
Tdaemon
Tuucp

#########################
#   Format of headers   #
#########################

H?P?Return-Path: <$g>
HReceived: $?sfrom $s $.by $j ($v/$Z)
	id $i; $b
H?D?Resent-Date: $a
H?D?Date: $a
H?F?Resent-From: $q
H?F?From: $q
H?x?Full-Name: $x
HSubject:
# HPosted-Date: $a
# H?l?Received-Date: $b
H?M?Resent-Message-Id: <$t.$i@$j>
H?M?Message-Id: <$t.$i@$j>



###########################
###   Rewriting Rules   ###
###########################


################################
#  Sender Field Pre-rewriting  #
################################
S1
#R$*<$*>$*		$1$2$3				defocus

###################################
#  Recipient Field Pre-rewriting  #
###################################
S2
#R$*<$*>$*		$1$2$3				defocus



#################################
#  Final Output Post-rewriting  #
#################################
S4

R@			$@				handle <> error addr

# resolve numeric addresses to name if possible
R$*<@[$+]>$*		$:$1<@$[[$2]$]>$3		lookup numeric internet addr

# externalize local domain info
R$*<$+>$*		$1$2$3				defocus
R@$+:@$+:$+		@$1,@$2:$3			<route-addr> canonical

# UUCP must always be presented in old form
R$+@$-.UUCP		$2!$1				u@h.UUCP => h!u

# delete duplicate local names
R$+%$=w@$=w		$1@$w				u%host@host => u@host
R$+%$=w@$=w.$D		$1@$w				u%host@host => u@host


###########################
#  Name Canonicalization  #
###########################
S3

# handle "from:<>" special case
R$*<>$*			$@@				turn into magic token

# basic textual canonicalization -- note RFC733 heuristic here
R$*<$*<$*<$+>$*>$*>$*	$4				3-level <> nesting
R$*<$*<$+>$*>$*		$3				2-level <> nesting
R$*<$+>$*		$2				basic RFC821/822 parsing

# make sure <@a,@b,@c:user@d> syntax is easy to parse -- undone later
R@$+,$+			@$1:$2				change all "," to ":"

# localize and dispose of route-based addresses
R@$+:$+			$@$>6<@$1>:$2			handle <route-addr>

# more miscellaneous cleanup
R$+			$:$>8$1				host dependent cleanup
R$+:$*;@$+		$@$1:$2;@$3			list syntax
R$+:$*;			$@$1:$2;			list syntax
R$+@$+			$:$1<@$2>			focus on domain
R$+<$+@$+>		$1$2<@$3>			move gaze right
R$+<@$+>		$@$>6$1<@$2>			already canonical

# convert old-style addresses to a domain-based address
R$+^$+			$1!$2				convert ^ to !
R$-!$+			$@$>6$2<@$1.UUCP>		resolve uucp names
R$+.$-!$+		$@$>6$3<@$1.$2>			domain uucps
R$+!$+			$@$>6$2<@$1.UUCP>		uucp subdomains
R$+%$+			$:$>9$1%$2			user%host
R$+<@$+>		$@$>6$1<@$2>			already canonical
R$-.$+			$@$>6$2<@$1>			host.user


#################################
#   special local conversions   #
#################################

S6
R$*<@$=w>$*		$:$1<@$w>$3			get into u@$w form
R$*<@$=w.$D>$*		$:$1<@$w>$3
R$*<@$=U.UUCP>$*	$:$1<@$w>$3

################################
#   Change rightmost % to @.   #
################################

S9
R$*%$*			$1@$2				First make them all @'s.
R$*@$*@$*		$1%$2@$3			Undo all but the last.
R$*@$*			$@$1<@$2>			Put back the brackets.



###################
###   Mailers   ###
###################


############################################################
############################################################
#####
#####		Local and Program Mailer specification
#####
############################################################
############################################################

Mlocal,	P=/usr/libexec/mail.local, F=lsDFMmn, S=10, R=20, A=mail -r $g -d $u
Mprog,	P=/bin/sh,   F=lsDFMe,   S=10, R=20, A=sh -c $u

S10
R@			$n			errors to mailer-daemon



############################################################
############################################################
#####
#####		Internet SMTP Mailer specification
#####
#####	Messages processed by this specification are assumed to leave
#####	the local domain -- hence, they must be canonical according to
#####	RFC822 etc.  This means that machines not registered with
#####	the NIC must be hidden behind our Internet relay.
#####
############################################################
############################################################

Mtcp,	P=[IPC], F=mDFMueXLC, S=14, R=24, A=IPC $h, E=\r\n

S14

# pass <route-addr>'s through
R<@$+>$*		$@<@$[$1$]>$2			resolve <route-addr>

# map colons to dots everywhere
R$*:$*			$1.$2				map colons to dots

# output local host in user@host.domain syntax
R$-			$1<@$w>				user w/o host
R$+<@$=w>		$:$1<@$w>			this host
R$+<@$->		$:$1<@$[$2$]>			canonicalize into dom
R$+<@$->		$:$1<@$2.$D>			if nameserver fails
R$+<@$=N.$D>		$@$1<@$2.$D>			nic-reg hosts are ok
R$+<@$*.$D>		$@$1%$2.$D<@$A>			else -> u%h@gateway

# if not local, and not a "fake" domain, ask the nameserver
R$+<@$+.$~I>		$@$1<@$[$2.$3$]>		user@host.domain
R$+<@[$+]>		$@$1<@[$2]>			already ok

# output internal ("fake") domains as "user%host@relay"



R$+<@$+.UUCP>		$@$2!$1<@$w>			user@host.UUCP


S24

# put in <> kludge
R$*<$*>$*		$1$2$3				defocus
R$*			$:$>3$1				now canonical form

# pass <route-addr>'s through
R<@$+>$*		$@<@$[$1$]>$2			resolve <route-addr>

# map colons to dots everywhere.....
R$*:$*			$1.$2				map colons to dots

# output local host in user@host.domain syntax
R$-			$1<@$w>				user w/o host
R$+<@$=w>		$:$1<@$w>			this host
R$+<@$->		$:$1<@$[$2$]>			canonicalize into dom
R$+<@$->		$:$1<@$2.$D>			if nameserver fails
R$+<@$=N.$D>		$@$1<@$2.$D>			nic-reg hosts are ok
R$+<@$*.$D>		$@$1%$2.$D<@$A>			else -> u%h@gateway

# if not local, and not a "fake" domain, ask the nameserver
R$+<@$+.$~I>		$@$1<@$[$2.$3$]>		user@host.domain
R$+<@[$+]>		$@$1<@[$2]>			already ok

# Hide fake domains behind relays



R$+<@$+.UUCP>		$@$2!$1				user@host.UUCP




############################################################
############################################################
#####
#####		Provide Backward Compatibility
#####
############################################################
############################################################

#####################################################
#  General code to convert back to old style names  #
#####################################################
S5

R$+<@$w>		$1				strip host
R$+<@$-.UUCP>		$2!$1				u@host.UUCP => host!u

############################################################
############################################################
#####
#####		UUCP Mailer specification
#####
############################################################
############################################################


Muucp,	P=/usr/bin/uux, F=DFMhuU, S=13, R=23, M=100000,
	A=uux - -r -z -a$f -gA $h!rmail ($u)

S13
R$+			$:$>5$1				convert to old style
R$*<@$=w>$*		$1<@$w>$2			resolve abbreviations
R$*<@$->$*		$1<@$2.$D>$3			resolve abbreviations
R$+<@$+>		$2!$1				uucpize (no @'s in addr)
R$w!$+			$1				strip local name
R$+			$:$U!$1				stick on our host name
R$=U!$-%$-		$:$1!$2@$3.$D			ucbvax!user@host.domain

S23
R$+			$:$>5$1				convert to old style
R$*<@$=w>$*		$1<@$w>$2			resolve abbreviations
R$*<@$->$*		$1<@$2.$D>$3			resolve abbreviations
R$+<@$w>		$U!$1				a!b@here -> here!a!b
R$=U!$+			$2				here!a!b -> a!b
# sanity ... should not happen.
R$=U.$D!$+		$2				strip local name.domain



#####################
###   Rule Zero   ###
#####################


############################################################
############################################################
#####
#####		RULESET ZERO PREAMBLE
#####
#####	The beginning of ruleset zero is constant through all
#####	configurations.
#####
############################################################
############################################################

S0

# first make canonical
R$*<$*>$*		$1$2$3				defocus
R$+			$:$>3$1				make canonical

# handle special cases
R$*<@[$+]>$*		$:$1<@$[[$2]$]>$3		numeric internet addr
R$*<@[$+]>$*		$#tcp$@[$2]$:$1@[$2]$3		numeric internet spec
R$+			$:$>6$1
R$-<@$w>		$#local$:$1
R@			$#error$:Invalid address	handle <> form

# canonicalize using the nameserver if not internal domain
R$*<@$*.$~I>$*		$:$1<@$[$2.$3$]>$4
R$*<@$->$*		$:$1<@$[$2$]>$3
R$*<@$->$*		$:$1<@$2.$D>$3			if nameserver fails

# now delete the local info
R<@$w>:$*		$@$>0$1				@here:... -> ...
R$*<@$w>		$@$>0$1				...@here -> ...

##################################
#  End of ruleset zero preamble  #
##################################


###############################################
###   Machine dependent part of Rule Zero   ###
###############################################



# resolve local UUCP connections
R<@$=V.UUCP>:$+		$#uucp$@$1$:$2				@host.UUCP:...
R$+<@$=V.UUCP>		$#uucp$@$2$:$1				user@host.UUCP

# all other stuff via $#uucp to relay host $@$R = easix
# Andreas Klemm (andreas@knobel.GUN.de)
# Mon Dec 28 00:42:39 MET 1992
#
R$*<@$*.$+>$*		$#uucp $@$R $:$1<@$2.$3>$4		user@any.domain
#^^^^^^^^^^^^^^^^^^^^^^^^^

# remaining names must be local
R$+			$#local$:$1			everything else
-- 
////// Andreas Klemm \\\\\\     /////// andreas@knobel.GUN.de \\\\\\\
private : +49 2137 12609        D-4040 Neuss 21 (Norf), Germany
at work : +49 2173 3964 165     Wiechers & Partner   Datentechnik GmbH
Telefax : +49 2173 3964 222     Abteilung Unix Support, D-4019 Monheim
From: chris@tisdec.tis.tandy.com
Date: 29 Dec 92 09:00 CST
Newsgroups: comp.unix.bsd
Subject: Re: [386bsd]  NMI messages on the conso
Message-ID: <27600005@tisdec.tis.tandy.com>