Mailing List Archive: exim: users

Retry on "No route to host" error

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patrick at bytemark

Sep 4, 2009, 2:54 AM

Post #1 of 3 (517 views)
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Retry on "No route to host" error

Morning all,

I had a complaint from a customer of a bounce from our backup MX this
morning following a apparently transient routing burp. I was wondering
if anyone knew a way to catch "No route to host" errors and having exim
apply its normal retry rules on that message.

The log entries looked like:

2009-09-04 07:19:30 1MjT50-0005G2-Ng <= local_part [at] yaho H=(web23704.mail.ird.yahoo) [87.248.115.62] P=smtp S=2236 id=608571.55792.qm [at] web23704
2009-09-04 07:19:33 1MjT50-0005G2-Ng a.mx.customer.domain [89.16.x.x] No route to host
2009-09-04 07:19:34 1MjT50-0005G2-Ng == web [at] customer R=dnslookup T=remote_smtp defer (113): No route to host
2009-09-04 07:19:34 1MjT50-0005G2-Ng ** web [at] customer: retry timeout exceeded
2009-09-04 07:19:34 1MjT50-0005G2-Ng Completed

Having had a look at the docs, it appears that such an error isn't
listed amongst the specific errors for retry rules.

At the moment our rule looks like

# Domain Error Retries
# ------ ----- -------

* * F,1d,15m; F,1w,2h

and we're running Exim 4.63.

Thanks!

--
Patrick J Cherry Bytemark Hosting Support
http://www.bytemark.co.uk/
tel: +44 (0) 1904 890 890

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eximX0902w at linuxwan

Sep 4, 2009, 6:43 AM

Post #2 of 3 (456 views)
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Re: Retry on "No route to host" error [In reply to]

On Fri, 2009-09-04 at 10:54 +0100, Patrick J Cherry wrote:
> and we're running Exim 4.63.

Please update to 4.69 (or CVS). This is a known bug up until 4.66 ish.

Without the bug exim follows the normal retry rules and doesn't
permanently reject the temporary error.

--
The Exim manual - http://docs.exim.org

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patrick at bytemark

Sep 4, 2009, 8:56 AM

Post #3 of 3 (455 views)
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Re: Retry on "No route to host" error [In reply to]

Hi Ted,

On Fri 04 Sep 2009 at 14:43, Ted Cooper wrote:

> On Fri, 2009-09-04 at 10:54 +0100, Patrick J Cherry wrote:
> > and we're running Exim 4.63.
>
> Please update to 4.69 (or CVS). This is a known bug up until 4.66 ish.

Thanks for that -- I'll update.

--
Patrick J Cherry Bytemark Hosting Support
http://www.bytemark.co.uk/
tel: +44 (0) 1904 890 890

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