howto how to convert from mmdf to sendmail osr5

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From: dowagiac_2000@yahoo.com (Matt Lewis)
Subject: MMDF to Sendmail 8.11.0 howto SCO Openserver 5.0.x
Date: 18 Jun 2002 11:32:42 -0700

I have had so many questions on using SCO Openserver answered here.  I
hope this howto helps a few.  I just converted a system running SCO
Openserver 5.0.5 from MMDF to Sendmail.  The system has 300 users and
the installation did not go very smoothly.  Here is all the
information I gleaned in the process of doing this conversion.  Any
questions or comments to dowagiac_2000@yahoo.com.   This procedure
will install Sendmail 8.11.0 and Webmin for SCO which has very nice
graphical admin tools for Sendmail.  Beyond this installation I
suggest getting a good guide to Sendmail.

sco-generic.mc file attached at bottom.

-------------------------------------------------------------------------------------------------------
Installing Sendmail 8.11.0 on SCO OpenServer 5.0.x
June 17, 2002
Introduction


To thwart the ever-growing problem of junk and spam email which in
many cases cripples systems and daily business operations it will be
necessary to convert a growing number of systems to newer and more
secure methods of mail deliver.  Methods to implement include the
blocking of mail relaying through systems.  Checks of who is sending
mail and who is authorized to do so.  Creation of black-listed senders
from which mail will always be rejected.  Creation of white-lists
specifing each individual who is allowed mail access while denying all
others.

Advantages of Sendmail over MMDF

a_ Better Relay checking
b_ Reverse DNS failure rejection
c_ Hosts, user, and network access restrictions applicable
d_ Better industry support, documentation and ongoing development over
MMDF or similiar mailers.
e_ Graphical Administration tools available for most environments
including SCO OpenServer 5.0.x

Preparing for Upgrade

1.      Backup the usr mail files in /usr/spool/mail/ 
      cp -rp /usr/spool/mail  ;; to preserve permissions on mail spool
files. Uninstalling mmdf or sendmail will remove these.
Backup the mmdf aliases file /usr/mmdf/table/alias.n.  This will later
be appended to /usr/lib/mail/aliases for sendmail
        Backup the mmdftailor config file /usr/mmdf/mmdftailor for reference

2.      To uninstall mmdf issue
      custom -p SCO:odtes -d SCO:MMDF

3.      By default Openserver 5.0.5 has sendmail 8.8.8b installed.  You
should not use this as many known exploits exist for this version of
sendmail.  Also many of the anti-spam features of sendmail are not
fully implemented in this version
      The newest complete Sendmail package available from SCO is part
of supplement rs506a meant for Openserver 5.0.6.  Included is Sendmail
8.11.0.  This supplement will work on Openserver 5.0.5 and according
to comp.unix.sco.misc posts will also work for Openserver 5.0.4

Downloading the Software

1.  ftp.caldera.com /pub/openserver5/rs506a/rs506a.tar
2.  scoadmin software
     Select Install new from Media Images.  This will list several
different components which can be installed.  Only select Sendmail and
install. The installation procedure will have an error.  Ignore this
error with 'i' and continue the Sendmail installation.

3. Now download the sendmail.8.11.0.tar.Z from
http://www.planetmirror.com/pub/sendmail/past-releases/
    We are only downloading the sendmail distribution to get the m4
files for sendmail.cf


4. Uncompress and untar sendmail.8.11.0.tar.Z in /usr/local/
    cd /usr/local/sendmail.8.11.0/cf/cf/
    cp sco-generic.mc to this directory

Creating the config file Sendmail.cf
1. Use the sco-generic.mc file I have provided(include at bottom of
this howto) for specific use with SCO Openserver.
    m4 sco-generic.mc > test.cf  will process the configuration
directives and create our initial configuration
2. cp test.cf /usr/lib/sendmail.cf
3. Now create the files referenced in sco-generic.mc
4. > /usr/lib/mail/access   :: Access database crucial for Anti-Spam
   > /usr/lib/mail/relay-domains :: List of hosts we will relay mail
for
   > /usr/lib/mail/local-host-names :: List of names the local host is
known by
  cd /usr/lib/mail/
  makemap hash access < access
  makemap hash relay-domains < relay-domains
  local-host-names is a plain text file and needs no special
processing.

5. Now append the saved alias.n file from the MMDF setup to
/usr/lib/mail/aliases
cat alias.n >> /usr/lib/mail/aliases
Edit aliases removing MMDF specific text, leaving the aliases behind
Issue 
newaliases ; builds the aliases database
Add to /usr/lib/mail/local-host-names ; names which the mail server is
known by  exa.
test-domain.com
nmc.test-domain.com
nmc

6. For Anti-Spam to have a change we must have reverse DNS
Make the following entries in /etc/resolv.conf
exa.
domain test-domain.com
nameserver 64.65.208.6
nameserver 64.65.196.6
hostresorder local bind nis


7. Now issue
/etc/init.d/sendmail start
If lucky everything is fine.
To test issue swaping username@domain.com for your own
/usr/lib/sendmail -v username@domain.com  < /dev/null
If this delivers sendmail should be properly configured.
To check remote access: exa
--
telnet nmc.test-domain.com 25 
Trying 209.131.73.132...
Connected to nmc.test-domain.com.
Escape character is '^]'.
220 nmc.test-domain.com ESMTP Sendmail 8.11.0/8.11.0; Mon, 17 Jun 2002
19:
59:34 GMT
mail from:<mal@testdomain.com>
250 2.1.0 <mal@testdomain.com>... Sender ok
rcpt to:<wwi@test-domain.com>
250 2.1.5 <wwi@test-domain.com>... Recipient ok
data
354 Enter mail, end with "." on a line by itself
.
250 2.0.0 g5HJxks13843 Message accepted for delivery
quit
221 2.0.0 nmc.test-domain.com closing connection
Connection closed by foreign host.
--
8. Check /usr/adm/syslog for sendmail errors. 


Notes:

1. In sco-generic.mc you will see an entry for
define(`confBIND_OPTS',`-DNSRCH -DEFNAMES')dnl
This is to accomodate for an error with Openserver resolve.  

$ nslookup 9838384.com
Server:  ns4.choiceone.net
Address:  64.65.208.6

Name:    9838384.com.test-domain.com

Notice that the local domain name gets appended.

Now lets pass some options to nslookup   

$ nslookup
Default Server:  ns4.choiceone.net
Address:  64.65.208.6

> set nodefname
> set nosearch
> 98387473.com
Server:  ns4.choiceone.net
Address:  64.65.208.6

*** ns4.choiceone.net can't find 98387473.com: Non-existent
host/domain


I looked and looked for the solution to add an option to
/etc/resolv.conf  finally I added an option to Sendmail so that this
problem would not occur.

------------------------------------------------------------------------------------------------


Graphical Sendmail Administration

Webmin (www.webmin.com) is a web based interface for configuring and
maintaining many aspects of a system.  It is driven by perl scripting
and thus very portable to many platforms.  The currently available
version 0.98 fully supports SCO Openserver and is an especially good
solution for maintanence and admin of many less understood system
services such as Sendmail.


Installation


1. Download Perl package from 
ftp://ftp2.caldera.com/pub/skunkware/osr5/vols/

2. Install as a package using 
scoadmin software -> Install new

3. Download the newest version of Webmin from www.webmin.com.  SCO
does have a version of Webmin in the Skunkware distribution at
ftp2.caldera.com/pub/skunkware/osr5/vols/.  Installation of Webmin
from www.webmin.com is smoother for SCO Openserver though

4. Untar webmin in /usr/local/

This will create a directory /usr/local/webmin-0.9x.x

cd /usr/local/webmin-0.9x.x

./setup.sh

This script will prompt you for several items.  Leave everything at
default except the following items.

Config files
/usr/local/etc/webmin
Log files
/usr/local/log/webmin

Admin user is root not admin as the default

Once webmin is installed you can start and stop the server with the
following commands.

/usr/local/etc/webmin/start
/usr/local/etc/webmin/stop


5. Now open a browser and type in the hostname or ip address of the
host and the port that you installed Webmin the default being 10000. 
examples

http://nmc.test-domain.com:10000
http://209.131.73.132:10000

6. Login with root and root password

7. Configure Webmin users and modules.  Very good documentation on
Webmin and all modules it contains are available at www.webmin.com




Appended here is the sco-generic.mc     

---------------------------------------------------------------------



divert(-1)
#
# Copyright (c) 1998, 1999 Sendmail, Inc. and its suppliers.
#       All rights reserved.
# Copyright (c) 1983 Eric P. Allman.  All rights reserved.
# Copyright (c) 1988, 1993
#       The Regents of the University of California.  All rights reserved.
#
# By using this file, you agree to the terms and conditions set
# forth in the LICENSE file which can be found at the top level of
# the sendmail distribution.
#
# Written for SCO OpenServer 5.0.x June 10th, 2002  Matt Lewis
divert(0)dnl
include(`/usr/local/sendmail-8.11.0/cf/m4/cf.m4')
#This defines local variables for OpenServer
VERSIONID(`$Id: sco-generic.mc,v 8.16 1999/04/24 05:37:43 gshapiro Exp
$')dnl
OSTYPE(`sco3.2')
define(`ALIAS_FILE',`/usr/lib/mail/aliases')dnl
FEATURE(`access_db',`hash /usr/lib/mail/access')dnl 
#Listing of hosts we relay for
define(`confCR_FILE',`/usr/lib/mail/relay-domains')dnl
MASQUERADE_AS(`testdomain.com')dnl
# Needed to fix error with /usr/lib/uucp/ permission on SCO OpenServer
5.0.x
define(`confDONT_BLAME_SENDMAIL',`GroupWritableDirPathSafe')dnl
# Cut down on spam set Max recipents to 15
define(`confMAX_RCPTS_PER_MESSAGE',`15')dnl
# File containing hosts we accept mail for locally
define(`confCW_FILE',`/usr/lib/mail/local-host-names')dnl
FEATURE(use_cw_file)dnl
#This is important takes care of Wild Card MX records and a problem
with OpenServer resolve
define(`confBIND_OPTS',`-DNSRCH -DEFNAMES')dnl
MAILER(smtp)dnl
 

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