Re: [Exim] lack of timeout on host lookup failures

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Autor: Philip Hazel
Data:  
Para: Dirk Koopman
CC: Exim Users
Assunto: Re: [Exim] lack of timeout on host lookup failures
On 25 Mar 2003, Dirk Koopman wrote:

> I run a few small mail servers here and when a valid user's domain's NS
> is unavailable, exim tries again immediately. There doesn't seem to be
> a) a limit to the number of times tried or b) some kind of timeout.
>
> Or do I need to RTFM more diligently?
>
> For example:-
>
> 2003-03-25 16:18:12 H=localhost.localdomain (post.tobit.co.uk)
> [127.0.0.1] F=<pelicans-bounces@???> temporarily rejected RCPT
> <polly_king25@???>: host lookup did not complete


That is a record of a process on your local host attempting to send a
message to your server, and getting a rejection. It is not Exim trying
again immediately, it is the process that is attempting to send the
message. Turning on connection logging may give you more information.

How can you tell which process? Well, if you run an ident service on
your host, and don't turn off ident queries in Exim, you might learn the
identity of the user running the process.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.