Exim does unwanted DNS lookups for LAN

[Moritz Schulte <tux@gmx.li>]

Hi,

I've a problem with Exim; I couldn't figure out what's wrong with my
configuration, so I'm asking here for help...

My LAN consists of two hosts (both running Debian 2.2 with Exim):
orion.sc (192.168.0.1), which is the Gateway and gryffindor.sc
(192.168.0.2). orion should be the SMTP smarthost for gryffindor, it
should forward mail To: *.sc (local mail) to these hosts and it should
forward outgoing mail to another smarthost (on the internet).  I don't
have a local DNS server, the /etc/hosts on both hosts has these
entries:

192.168.0.1	orion.sc	orion
192.168.0.2	gryffindor.sc	gryffindor

I can reach the hosts with their names without problem.

My router section in /etc/exim.conf on gryffindor looks like this:

######################################################################
#                      ROUTERS CONFIGURATION                         #
[...]

# Send all mail to a smarthost

smarthost:
  driver = domainlist
  transport = remote_smtp
  route_list = "* orion.sc byname"

end

I *wrote* "byname", which tells Exim to use gethostbyname() to find
the IP address of orion and not "bydns_*"....
BUT, Exim *still* makes DNS lookups for orion.sc, which is very
annoying, 'cause this establishs a connection to the internet.

It fixes the problem if i set the route_list to "* 192.168.0.1 byname"
- but I don't understand why "* orion.sc byname" doesn't work. Well,
it works, if I remove the default gateway on gryffindor pointing to
orion, but sure that's not the solution.

The router section on orion looks like this:

######################################################################
#                      ROUTERS CONFIGURATION                         #
[...]

# Deliver mail to the local net via gethostbyname(), not via DNS

lan:
  driver = domainlist
  transport = remote_smtp
  route_list = "*.sc $domain byname"

# Send all mail to a smarthost

smarthost:
  driver = domainlist
  transport = remote_smtp
  route_list = "* smtprelay.t-online.de bydns_a"

end

Here's the same problem; Exim establishs a internet connection because
of a DNS lookup.

In both cases, the mail gets delivered correctly, but it should work
without establishing a internet connection.

Can somebody please tell me what am I missing?

    Thanks,
    moritz

	moritz
-- 
Moritz Schulte <moritz@chaosdorf.de> http://hp9001.fh-bielefeld.de/~moritz/
Debian/GNU supporter - http://www.debian.org/ http://www.gnu.org
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