[ILUG] null client configuration for sendmail

[Walter Faleiro]

Hi Badge


Note the difference

Connecting from a host mankind.


 mail -v walter
Subject: test mail
.
Cc:
Null message body; hope that's ok
walter... Connecting to [127.0.0.1] via relay...


And connecting from a working host splendor
 mail -v walter
Subject: test mail
Cc:
Null message body; hope that's ok
walter... Connecting to server02.sequencedesign.com. via relay...


How do I make the first one connect to server02 via relay instead of
connecting to 127.0.0.1

Regards,
--Walter




On 8/30/06, Badger <badger at scattermail.com> wrote:
>
> On Wed, Aug 30, 2006 at 07:08:52PM +0530, Walter Faleiro wrote:
> > Hi Badger,
> >
> > Following is the info you need
> >
> >
> > [root at fedora ~]# rpm -qa | grep sendmail
> > sendmail-cf-8.13.4-2
> > sendmail-8.13.4-2
> > [root at fedora ~]# cat /etc/mail/sendmail.mc
> > divert(-1)dnl
> > dnl #
> > dnl # This is the sendmail macro config file for m4. If you make changes
> to
> > dnl # /etc/mail/sendmail.mc, you will need to regenerate the
> > dnl # /etc/mail/sendmail.cf file by confirming that the sendmail-cf
> package
> > is
> > dnl # installed and then performing a
> > dnl #
> > dnl #     make -C /etc/mail
> > dnl #
> > include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
> > VERSIONID(`Nullclient for Linux')dnl
> > OSTYPE(`linux')dnl
> > DOMAIN(`generic')dnl
> > FEATURE(`nullclient',`example.com')dnl
> > undefine(`ALIAS_FILE')dnl
> >
> > [root at fedora ~]# cat /etc/hosts
> > # Do not remove the following line, or various programs
> > # that require network functionality will fail.
> > 127.0.0.1 localhost.localdomain localhost
> > 172.16.20.60    fedora.example.com       fedora
> >
> >
> > And yes,
> > I do type make -C /etc/mail.
> > Service sendmail restart.
> >
> > My distribution is Fedora Core4. I think it should not be that different
> for
> > FC5, so you can list the steps for me to try out.
> >
> >
> > Regards,
> > --Walter
>
>
> Walter, I just took the sendmail.mc that you posted and ran it on my
> machine (changing the `example.com', to `gonzo.example.com'). It worked
> without a problem. As soon as I restarted the server, and mail that I
> sent to badger went to badger at gonzo.example.com instead of to the local
> account.
>
> I will go through the steps I took earlier to get sendmail up and
> working in the first place, but I can't see that there is anything in
> there that will help you.
>
> You don't mention how DNS is set up for 'example.com'. Perhaps you could
> check the following:
> $ cat /etc/resolv.conf
> $ dig +short example.com a       # From fedora.example.com
> $ dig +short example.com mx      # From fedora.example.com
>
> I don't suppose there are any clues in the mail log file
> /var/log/maillog?
>
> The steps I carried out earlier to get this up and working on FC5 are
> going to sound primative in comparison to what you have done:
>
> 1. Upgrade sendmail package and install the sendmail-cf package:
>     $ yum upgrade sendmail
>     $ yum install sendmail
>
> 2. Copy the new sendmail.mc from /etc/mail/sendmail.mc.rpmnew into place
>    as /etc/mail/sendmail.mc and edit it as follows:
>     (i)  comment out all MAILER macros
>     (ii) add "FEATURE(`nullclient', `gonzo.example.com')dnl" to end of
>          file
>
> 3. do 'make -C /etc/mail'
>
> 4. Restart server
>
> 5. Test the new configuration as user badger, using /bin/mail as
>    follows:
>       $ echo "hello world" | mail -s test badger
>
> 6. The result is that mail is now sent to account of badger on
>    gonzo.example.com, not the local badger account.
>
> Not much point in me posting the sendmail.mc that I used then since the
> one you posted earlier works fine on my machine (and the one I used is
> 175 lines long and is full of crap).
>
> I don't have an MX record for gonzo.example.com, but I do have an A
> record, so:
> $ dig +short gonzo.example.com a
> 172.16.12.14
>
> Any further thoughts?
>
> - badge
>
> --
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