Re: [exim] manualroute, route_data and fallback hosts

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Author: Philip Hazel
Date:  
To: Marc Haber
CC: exim-users
Subject: Re: [exim] manualroute, route_data and fallback hosts
On Tue, 6 Mar 2007, Marc Haber wrote:

> I have a manual route router with a route_data option that expands to
> "torres.zugschlus.de:bar.zugschlus.de". This is only a test setup.
>
> This works fine as long as bar.zugschlus.de exists in DNS. When
> bar.zugschlus.de is removed from DNS (as might happen when one
> delivers to a third-party domain that is not under local control), the
> router fails the message, preventing its delivery.
>
> Setting the host_find_failed option to different values did not cause
> the desired behavior, the broken host bar.zugschlus.de being ignored
> and delivery taking place to torres.zugschlus.de. All I could get out
> of the router was either passing the address to the next router or
> faling the address.
>
> How can I make a manualroute router ignore non-existing hosts in
> route_data and only error out if none of the hosts listed are
> available?


I don't think there is a direct way. You could use a dnsdb lookup to
modify the result of the expansion, I suppose.

If you want an "ignore" option for host_find_failed, please add this
wish to Bugzilla.

-- 
Philip Hazel            University of Cambridge Computing Service
Get the Exim 4 book:    http://www.uit.co.uk/exim-book