Re: [exim] Frustrating Routing Problem with Bad DNS

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Auteur: Marc Perkel
Datum:  
Aan: exim-users
Onderwerp: Re: [exim] Frustrating Routing Problem with Bad DNS


On 7/10/2010 6:34 PM, Phil Pennock wrote:
> On 2010-07-09 at 19:29 -0700, Marc Perkel wrote:
>
>> The idea being that if the first router failed because the host name
>> failed then it would fall through to the next router and forward to my
>> retry server. But I'm still just getting the DNS error.
>>
>> How can I get this to work? What am I missing?
>>
> "3.10 Running an individual router"
>
> DNS failure is triggering a "defer" result.
>
> First Router should have a condition which checks something like:
>
> ${if or{{>{$message_age}{1200}}\
>          {!first_delivery}}}

>
> so that on the second attempt, or after a while, the recipient will be
> declined by that router.
>
> That said, the only DNS I'm seeing in your first Router is if the
> preprocess.db gives hostnames and if those DNS lookups fail, the Router
> should be freezing the mail. You'd want "host_find_failed = pass" on
> the Router in that case. But you don't mention that the mails are
> ending up frozen, which leaves me confused about just what is actually
> happening given the lack of diagnostics supplied.
>
> You could find host_find_failed by looking through the documented
> available options for the manualroute Router.
>
> -Phil
>
>


That might be what I need. It would be nice if there were a command to
trigger fallback_host to work.

Thanks