Pkg exim4 users - Aug 2005 - exim4 split configuration with Debian Sarge 3.1

Hi List,

I am new to exim4, be gentle please :).

Was wondering if someone around here can help with this one.....

We have a mail server on the internet for domain example.com and mail  
is working
fine, the problem is that we are sitting at our office sending mail to  
each other, the mail
goes all the way out to the external mail server, and we have to all  
fetch it through the
internet to our MUA''s, wasting bandwidth.

I have installed exim4 at our office on a Debian Sarge 3.1 box and I  
want it to be able to
do the following:

1.) External mail server has several accounts @example.com, some of  
them at the office
and some not, i want local users at the office to be able to send mail  
to this local server
(at the same domain) and be delivered to their mailboxes for this  
domain (Which works if
I edit /etc/exim4/update-exim4.conf.conf and add the domain in  
dc_other_hostnames=''example.com''

The problem comes in when users at the office wants to send mail to  
this domain to a user
that is not on the local server but this user is on the external server  
and exim rejects it with
"Unrouteable address", which is correct.

2.) What rule do I put in place for local users that send mail to each  
other on the local server
to go to their maildir_home accounts and if they send mail to an  
external user that the local
server routes this mail to the listed MX for example.com and not try  
and deliver it "locally"

I''ve looked around and can not find any userfull information on google
or in the faq''s. Tried
that alias route, etc. but I can not get this working the way I think I  
want it to work.

Desired effect:

For unknown "local" account on the server it must route the mail like
this:

exim4 -bt staff@example.com
R: dnslookup_relay_to_domains for staff@example.com
staff@example.com
   router = dnslookup_relay_to_domains, transport = remote_smtp
   host mail.example.com [x.x.x.x] MX=xxx

For known local account at the same domain exim must deliver the mail  
locally:

exim4 -bt jonathan@example.com
R: system_aliases for jonathan@localhost
R: userforward for jonathan@localhost
R: procmail for jonathan@localhost
R: maildrop for jonathan@localhost
jonathan@localhost
router = spamcheck_router, transport = spamcheck

************************************************************************ 
********

Current effect:

exim4 -bt staff@example.com
R: dnslookup_relay_to_domains for staff@example.com
staff@example.com
   router = dnslookup_relay_to_domains, transport = remote_smtp
   host mail.example.com [x.x.x.x] MX=xxx

exim4 -bt jonathan@example.com
R: dnslookup_relay_to_domains for jonathan@example.com
jonathan@example.com
   router = dnslookup_relay_to_domains, transport = remote_smtp
   host mail.example.com [x.x.x.x] MX=xxx

exim4 -bt jonathan@localhost
R: system_aliases for jonathan@localhost
R: userforward for jonathan@localhost
R: procmail for jonathan@localhost
R: maildrop for jonathan@localhost
jonathan@localhost
router = spamcheck_router, transport = spamcheck

Maybe it''s because I do not know what exactly to look for?

Installed:

ii  exim4                                    4.50-8
ii  exim4-base                         4.50-8
ii  exim4-config                       4.50-8
ii  exim4-daemon-heavy       4.50-8
ii  exim4-doc-html                  4.50-1

Any help will be appreciated, any additional information?

Thank you.

Regards,

Jono
  ?.''''`. ?   Linux registered user #384330
  : :'' ?: ? ? http://counter.li.org
  `. `''` ? ?
  ? `- ?

[A little confused question snipped]

So you want to distribute the mailboxes for one and the same domain
over two servers?

I have done this once, and it''s a bloody pain. One word:
don''t.

A better idea would be to have office.example.com and
internet.example.com mail domains, each one on one of the mail
servers. Incoming mail would be forwarded to the appropriate domain
with a table lookup, outgoing mail be rewritten to example.com to fake
consistency to the outside.

Looks ugly, but is far easier to manage.

Greetings
Marc

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