5 messages in net.sourceforge.lists.courier-usersRe: [courier-users] Problem/Error 456...
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cour...@thefreecat.orgJun 25, 2007 9:12 am 
Sam VarshavchikJun 25, 2007 3:39 pm 
cour...@thefreecat.orgJun 25, 2007 6:44 pm 
Sam VarshavchikJun 25, 2007 6:48 pm 
cour...@thefreecat.orgAug 24, 2007 8:16 am 
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Subject:Re: [courier-users] Problem/Error 456 (random?)Actions...
From:Sam Varshavchik (mrs@courier-mta.com)
Date:Jun 25, 2007 3:39:10 pm
List:net.sourceforge.lists.courier-users

cour@thefreecat.org writes:

Digging in both syslogs I find :

Jun 25 17:39:59 miaou courieresmtp:
id=000086A8.467FD4F8.0000501D,from=<ca@thefreecat.org>,addr=<ca@thefreecat.org>:
Connection timed out Jun 25 17:39:59 miaou courieresmtp:
id=000086A8.467FD4F8.0000501D,from=<ca@thefreecat.org>,addr=<ca@thefreecat.org>,status:
deferred

Jun 25 06:58:36 omallet courieresmtp:
id=00111F87.467BCC6C.00007332,from=<fo@227.jp>,addr=<ca@miaou.thefreecat.org>:
Connection timed out Jun 25 06:58:36 omallet courieresmtp:
id=00111F87.467BCC6C.00007332,from=<fo@227.jp>,addr=<ca@miaou.thefreecat.org>,status:
deferred

Correct. A 456 error gets reported only after an earlier delivery attempt to the recipient fails. Then, Courier will reject all further deliveries to the same recipient with either a 456 or a 556, dependening on the circumstances, for some period of time.

There's no point in delivering mail to a recipient that's not receiving it.

So this looks like a smtp problem but the link between omallet and miaou *is* also smtp. And I don't have network errors.

Well, it is a network problem. The 456 is just the end result.