1 Advice Received From
2 Solution
3 Remark
4 Paul Pomes' Sun Mail Help Sheet
5 Original Post
1 Advice Received From:
Claus Assmann <ca@informatik.uni-kiel.de>
Frank Sargent <fsargent@rri.on.ca>
Ian Camm <i.camm@fml.co.uk>
2 Solution
I just followed the steps in Paul Pome's Sun Mail Help Sheet.
I had left out a crucial step (step 9) and that's why my setup
hadn't been working.
Step 7 is redundant. The DR and CR lines can be commented
out. They're not needed if you are using ddn. I couldn't get my
(working) setup to forward bogus-address email to the CR and DR
machines.
The host ucbvax.berkeley.edu in step 11 no longer exists.
3 Remark
I had expected to be emphatically told "What! you are using the
vendor-supplied sendmail?! You MUST download sendmail 8.6.x ..."
however I didn't receive any emails telling me to do this. I am in
the process of trying to download the latest safest version though.
4 Paul Pomes' Sun Mail Help Sheet
! How to Fix a Cranky SUN Mail System.
!
!
! 1) Kill the existing sendmail daemon process.
!
! ps waux | grep sendmail
! kill <pid> where <pid> is the process id of the daemon.
!
! 2) Replace the default sendmail executable with the SUN-supplied version
! that understands use of the DNS. Zap any frozen config file present.
!
! cd /usr/lib
! cp sendmail sendmail.nomx
! chmod 755 sendmail.nomx
! cp sendmail.mx sendmail
! chmod 4511 sendmail
! rm -f /usr/lib/sendmail.fc /etc/sendmail.fc /etc/mail/sendmail.fc
!
! 3) Establish a /etc/resolv.conf file to direct DNS queries to a server.
! The values of "domain" and the "nameserver" lines depends critically
! on where you are. At the University of Illinois the value of domain
! is typically your department or office name combined with "uiuc.edu".
! Long names, e.g., Personnel Services Office, are typically abbreviated
! (pso.uiuc.edu). Examples: math.uiuc.edu, life.uiuc.edu, ncsa.uiuc.edu.
!
! Some institutions have a one domain fits all name. An example of
! this is the US Army Corps of Engineers, Construction Engineering
! Research Lab locally known as US Army CERL. Army policy specifies
! that domain names must use their official acronym with the "army.mil"
! domain. So CERL's domain name is "cecer.army.mil". Adding a fourth
! domain to distinguish internal departments and divisions would have
! made the names overly long. Thus all CERL hosts are named
! foo.cecer.army.mil.
!
! Selecting nameservers must be done in consultation with your local
! network expert. At the University of Illinois (and ONLY here please)
! the following values can be used. Let's repeat that - only University
! of Illinois hosts should be using our nameservers.
!
! domain foo.uiuc.edu (replace foo with your official domain)
! nameserver 128.174.5.59
! nameserver 128.174.5.50
! nameserver 128.174.5.58
!
! At US Army CERL, use the following:
!
! domain cecer.army.mil
! nameserver 129.229.20.254
! nameserver 129.229.1.5
!
! N.B., SUN's resolver code is based on BIND v4.8.1 and suffers from several
! problems. Chief among those is zero fault tolerance. If the first listed
! nameserver is unreachable or dead, the resolver won't try any of the
! subsequently listed servers. Re-compiling both sendmail and libresolv.a
! from modern sources is the only fix for this.
!
! 4) Copy the "main" sendmail.cf base file to sendmail.cf.
! Under SUN-OS 4.X use
!
! cp /usr/lib/sendmail.main.cf /etc/sendmail.cf
!
! Under SUN-OS 5.X use
!
! cd /etc/mail
! cp main.cf sendmail.cf
!
!
! Now that the base work has been done you have a choice: death or chi-chi.
! No, that's another sick joke. Let's stick to SUNs and retain what shreds
! of dignity we can. Onward.
!
! The next set of steps involve changes to the sendmail.cf file. Invoke the
! editor of your choice on /etc/sendmail.cf or /etc/mail/sendmail.cf.
!
! 5) Change the value of the $j greeting macro. Macros are defined with
! lines beginning with 'D'. Thus the $j macro is defined on a line
! beginning with 'Dj'. Change sendmail.cf (nee main.cf) to look like
!
! # my official hostname
! # You have two choices here. If you want the gateway machine to identify
! # itself as the DOMAIN, use this line:
! #Dj$m
! # If you want the gateway machine to appear to be INSIDE the domain, use:
! #Dj$w.$m
! # Unless you are using sendmail.mx (or have a fully-qualified hostname), use:
! Dj$w
!
! (Comment out the Dj$m entry and enable the Dj$w entry.)
!
! 6) Select the proper mailer for forwarding to a smarter relay. In the
! case of a site connected to the Internet, this is the "ddn" mailer.
! Change to:
!
! # major relay mailer - typical choice is "ddn" if you are on the
! # Defense Data Network (e.g. Arpanet or Milnet)
! #DMsmartuucp
! DMddn
!
! 7) Select the smarter relay to handle messages to unknown destinations.
! This MUST be selected on a per-site basis.
!
! At the University of Illinois *ONLY*
!
! # major relay host: use the $M mailer to send mail to other domains
! DRux1.cso.uiuc.edu
! CRux1.cso.uiuc.edu
!
! At the US Army CERL *ONLY*
!
! # major relay host: use the $M mailer to send mail to other domains
! DRmax.cecer.army.mil
! CRmax.cecer.army.mil
!
! 8) Configure your domain names. Replace the foo.bar.uiuc.edu names below
! with your host's FQDN.
!
! #################################################
! #
! # General configuration information
! ...
! # Example: (bogus examples, ignore)
! # DmCS.Podunk.EDU
! # Cm cs cs.Podunk.EDU
! Dwfoo.bar.uiuc.edu
! Dmfoo.bar.uiuc.edu
!
! 9) Change the ddn mailer rules in ruleset 0 according to the comments there.
! Ruleset 0 is labelled by a line containing only "S0". About 40 lines
! further down are the following rulesets.
!
! # Pass other valid names up the ladder to our forwarder
! #R$*<@$*.$=T>$* $#$M $@$R $:$1<@$2.$3>$4 user@domain.known
!
! # Replace following with above to only forward "known" top-level domains
! #R$*<@$*.$+>$* $#$M $@$R $:$1<@$2.$3>$4 user@any.domain
!
! # if you are on the DDN, then comment-out both of the the lines above
! # and use the following instead:
! R$*<@$*.$+>$* $#ddn $@ $2.$3 $:$1<@$2.$3>$4 user@any.domain
!
! Follow the comments and comment out the second rule that forwards
! only "known" domains and enable the following rule that uses the "ddn"
! mailer.
!
! Write the sendmail.cf file back out and leave the editor. Now test the
! changes by using sendmail in test mode.
!
! 10) Test address recognition. Invoke sendmail in address test mode:
!
! /usr/lib/sendmail -bt
!
! Run the following address forms through one at a time. The leading 0
! is the starting ruleset. Each address should resolve to "user" using
! the "local" mailer. Replace "foo" and "bar.uiuc.edu" with the name
! of your host and domain.
!
! 0 user
! 0 user@foo
! 0 user@foo.bar.uiuc.edu
!
! 11) Verify out-going addresses are correct. Use the -v option to Berkeley
! mail to check that the return addresses are correct. If -v doesn't
! work with your mailer, use sendmail direct.
!
! Mail -v nobody@ucbvax.berkeley.edu < /dev/null
! or
! /usr/lib/sendmail -v nobody@ucbvax.berkeley.edu < /dev/null
!
! 12) Fire up sendmail in daemon mode.
!
! /usr/lib/sendmail -bd -q1h
!
! 13) Test in-bound mail. From another host, verify that mail sent to a
! user that has no forwarding set up, either via /etc/aliases or
! .forward file, actually arrives. Telnet to the SMTP port and verify
! that the greeting message uses the fully qualified domain name.
!
! telnet foo.bar.uiuc.edu 25
!
! quit
5 Original Post
The upstream site that acts as my site's mailhost and mail relay host
says that next month they will close public access to their mail relay
host. I tried to set up my Sun Sparc Classic Solaris 2 machine to be a
mail relay host. I followed the instructions in the Solaris manual, then
tried to send emails into, out of, and within my site.
Internal mail between hosts within my site still worked but external mail
didn't come in or go out. From reading the MAILER-DAEMON messages I think
I understand what is happening, but don't know why, or how to fix it.
I tried both the original sendmail and the /usr/lib/sendmail.mx version.
I tried DMddn, DMsmartuucp, DMether, all with similar negative results.
In the information below I have changed the host names and IP
numbers to the arbitrary values one.uni.ac.th for my site and
big.upstream.ac.th for the machine that currently serves as our mailhost
and relay host. The primary nameserver for our domain is another computer
at another site, not at uni.ac.th or upstream.ac.th . One.uni.ac.th is
not running the DNS nameserver daemon in.named.
1 MAILER-DAEMON example error messages
2 Attempted Relay Host settings
3 Original mail-server-only Settings
4 Other (unchanged) configuration informatiom
1 MAILER-DAEMON error messages:
Example 1:
----- Transcript of session follows -----
Connected to one.uni.ac.th:
>>> HELO one.uni.ac.th
<<< 553 one.uni.ac.th host name configuration error
554 myself@host.another.site.th... Service unavailable
Example 2:
----- Transcript of session follows -----
bad system name: one.uni.ac.th
uux failed ( 68 )
550 myself@host.another.site.th... Host unknown
==============================================================================
2 Attempted Relay Host settings
selected lines from /etc/hosts
127.0.0.1 localhost loghost
222.44.222.44 one.uni.ac.th one mailhost
111.222.33.55 big.upstream.ac.th big
selected lines from /etc/mail/sendmail.cf
# Sendmail configuration file for "MAIN MACHINES"
# Lmmaildomain
Dj$w.$m
DMether
# I also tried DMddn and DMsmartuucp with similar negative results.
DRone.uni.ac.th
CRone.uni.ac.th
Dmuni.ac.th
Cm one.uni.ac.th uni.ac.th
# Version number of configuration file
#ident "@(#)version.m4 1.17 92/07/14 SMI" /* SunOS 4.1 */
Mlocal, P=/bin/mail, F=flsSDFMmnP, S=10, R=20, A=mail -d $u
Mprog, P=/bin/sh, F=lsDFMeuP, S=10, R=20, A=sh -c $u
Mether, P=[TCP], F=msDFMuCX, S=11, R=21, A=TCP $h
Muucp, P=/usr/bin/uux, F=msDFMhuU, S=13, R=23,
A=uux - -r -a$f $h!rmail ($u)
Mddn, P=[TCP], F=msDFMuCX, S=22, R=22, A=TCP $h, E=\r\n
Msmartuucp, P=/usr/bin/uux, F=CmsDFMhuU, S=22, R=22,
A=uux - -r $h!rmail ($u)
==============================================================================
3 Original mail-server-only Settings
selected lines from /etc/hosts
127.0.0.1 localhost loghost
222.44.222.44 one.uni.ac.th one
111.222.33.55 big.upstream.ac.th big mailhost
selected lines from /etc/mail/sendmail.cf
# SENDMAIL CONFIGURATION FILE FOR SUBSIDIARY MACHINES
# @(#)subsidiary.mc 1.11 88/02/08 SMI; from UCB arpa.mc 3.25 2/24/83
#Lmmaildomain
Dj$w.$m
DMether
DRbig.upstream.ac.th
CRbig.upstream.ac.th
Dmuni.ac.th
Cmuni.ac.th
# Version number of configuration file
#ident "@(#)version.m4 1.17 92/07/14 SMI" /* SunOS 4.1 */
Mlocal, P=/bin/mail, F=flsSDFMmnP, S=10, R=20, A=mail -d $u
Mprog, P=/bin/sh, F=lsDFMeuP, S=10, R=20, A=sh -c $u
#ident "@(#)etherm.m4 1.14 92/07/14 SMI" /* SunOS 4.1 */
Mether, P=[TCP], F=msDFMuCX, S=11, R=21, A=TCP $h
Muucp, P=/usr/bin/uux, F=msDFMhuU, S=13, R=23,
A=uux - -r -a$f $h!rmail ($u)
==============================================================================
4 Other (unchanged) configuration information
selected lines from /etc/nsswitch.conf
hosts: files dns [NOTFOUND=return]
aliases: files
services: files
==============================================================================
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:11:10 CDT