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[Bug 1140] Issue with retries when the destination has a consistently unreachable server

 

 

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bugzilla.exim.simon at arlott

Aug 28, 2011, 10:55 AM

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[Bug 1140] Issue with retries when the destination has a consistently unreachable server

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http://bugs.exim.org/show_bug.cgi?id=1140




--- Comment #1 from Simon Arlott <bugzilla.exim.simon [at] arlott> 2011-08-28 18:55:36 ---
Created an attachment (id=496)
--> (http://bugs.exim.org/attachment.cgi?id=496)
Log file without bugzilla's line wrapping


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pdp at exim

Aug 28, 2011, 1:56 PM

Post #2 of 2 (248 views)
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[Bug 1140] Issue with retries when the destination has a consistently unreachable server [In reply to]

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http://bugs.exim.org/show_bug.cgi?id=1140




--- Comment #2 from Phil Pennock <pdp [at] exim> 2011-08-28 21:56:27 ---
Back when I was an ISP postmaster, I saw this for cases where particular
customers had issues; I don't entirely recall (it's been five years) if this
was for customers whose mail only went from the frontends (MXs) to the main
system if they were off-line at the time, or if it was for all customers, with
the bug causing a thundering herd failover of traffic going from the front ends
to the storage injection nodes (also exim). Either way, it affected the
visibility of the storage nodes from the PoV of the frontends.

We ended up just nuking the relevant retry hints every minute.

So, this is "confirmed", and long-standing, and is tricky to trace down. I'll
take another look.


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