Re: [Exim] Frozen due to dns-lookup problem

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Author: Sascha E. Pollok
Date:  
To: Philip Hazel
CC: exim-users
Subject: Re: [Exim] Frozen due to dns-lookup problem
>> customer_route:
>> driver = domainlist
>> transport = remote_smtp
>> route_file = /usr/local/exim/customer.route
>> search_type = partial-lsearch
>
>> 2000-07-30 18:01:02 13IvHL-0003qk-00 == susi@??? R=customer_route defer
>> (-1): lookup of host "mail.test.de" failed in customer_route router
>> 2000-07-30 18:01:02 13IvHL-0003qk-00 Frozen
>
>The argument goes like this: You have routed this message to a specific
>host by name. However, that host does not exist. Therefore, this looks
>like a configuration error which should be brought to the attention of
>the postmaster, and also, there is no point in keeping on retrying.
>
>This happens only when the DNS lookup yields "no such host". It should
>not happen if there are just DNS problems like timeouts, etc.
>
>You can, however, change the behaviour by setting host_find_failed.
>
>Hmm. Just had a thought. I suppose if you said "byname" and it did a DNS
>lookup that timed out, gethostbyname() might yield "no such host".


That might exactly be the thing. The customer.route file looks e.g.
like this:

*.test.de        mail.test.de        byname


Might the host_find_failed option help anyway?

Regards,
Sascha

---
Sascha E. Pollok
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Technical Staff / Network Operations
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