[Pkg-exim4-users] Where to edit config File in Etch for Multiple Smarthosts

Neil S. Briscoe neil.briscoe at adelix.com
Fri May 11 08:21:38 UTC 2007

Sascha Berkenkamp wrote:
> Hi,
> I'm totally confused about exim4 in Debian etch. I told not to split up to 
> multiple config files.
> However, I wanted to configure my Exim for multiple smarthosts, described in 
> http://www.tgunkel.de/docs/exim_smarthosts.en.
> But should I paste the code anywhere in /etc/exim4/exim4.conf.template? I 
> mean, I think I'm not the only one who needs more than one smarthost (f.g. 
> because you like it, because gmx put everthing into spam which is relayed by 
> my gmx address over my local ISP smtp, because my university only allows 
> their smtp, etc). 
> To the maintainer, why don't but a single sample exim file 
> to /usr/share/doc/exim4/examples which covers this smarthorst problem. How 
> simple is that. It's ridiculous, I administrated three debian servers for 
> more than two years, but I'm not able configure my exim4 (exim3 was easier to 
> configure, wasn't it) for a simple smarthost delay. 

Now that I'm used to it, I find Exim4 easier to administer than I ever 
did Exim 3.

But to get to your problem, I use a single file as well.  Yes, you'll 
need to put your multiple smarthost router in your exim4.conf.template file.

Below you'll find a snippet of my file to give you some idea.  My 
smart_route: router is the one that handles multiple smart hosts, the 
other two are routers that are in the default distribution.  Oh, I 
should say, this is taken from a Sarge machine - but it should give you 
the idea.


.ifdef DCconfig_internet
# configtype=internet

# This is our smart router - intended to send all non-local mail relayed
# through the server via emailsystems servers for processing.  Mail sent 
# customers with domains that havn't signed up for the service will 
still be routed
# via a normal MX lookup using the dnslookup: router below

   driver = manualroute
   transport = remote_smtp
   domains = !+local_domains
   senders = *@+emailsystems_domains
   route_list = * post8a.emailfiltering.com:post8b.emailfiltering.com

# deliver mail to the recipient if recipient domain is a domain we
# relay for. We do not ignore any target hosts here since delivering to
# a site local or even a link local address might be wanted here, and if
# such an address has found its way into the MX record of such a domain,
# the local admin is probably in a place where that broken MX record
# could be fixed.

   debug_print = "R: dnslookup_relay_to_domains for $local_part@$domain"
   driver = dnslookup
   domains = ! +local_domains : +relay_to_domains
   transport = remote_smtp
   same_domain_copy_routing = yes

# deliver mail directly to the recipient. This router is only reached
# for domains that we do not relay for. Since we most probably can't
# have broken MX records pointing to site local or link local IP
# addresses fixed, we ignore target hosts pointing to these addresses.

   debug_print = "R: dnslookup for $local_part@$domain"
   driver = dnslookup
   domains = ! +local_domains
   transport = remote_smtp


Neil Briscoe
Adelix Ltd
neil.briscoe at adelix.com web: www.adelix.com
tel: 0845 230 9592 / fax: 0845 230 9591 / main office: 0845 230 9590
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