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List:       dovecot
Subject:    Re: Duplicate mails on pop3 expunge with dsync replication on 2.2.35 (2.2.33.2 works)
From:       Gerald Galster <list+dovecot () gcore ! biz>
Date:       2018-09-21 11:47:36
Message-ID: 7E1E09B7-9D02-4F75-B1F5-6126C5E09742 () gcore ! biz
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Hi Jan,

unfortunately no news on this topic after 6 months.

I understand this bug might not be a top priority but perhaps someone from the \
dovecot team can clarify if they will investigate eventually or if we're on our own.

Thanks,
Gerald




> Am 18.09.2018 um 23:20 schrieb Jan Münnich <jan@dotplex.com>:
> 
> Hi,
> 
> Has anyone any idea how to solve or further debug this issue? It seems indeed that \
> it was introduced in 2.2.34 and is still there in 2.3.2.1. I found a couple of \
> posts for this on the mailing list and elsewhere, but no solution: 
> When a message is retrieved and immediately expunged, it gets replicated back from \
> the other dsync node. This usually happens with POP3 but with IMAP as well, when \
> the MUA fetches the mail and the user opens and reads it immediately within \
> seconds. It does not seem to happen when the message is retrieved and only expunged \
> a while after, which is mostly the case with IMAP. 
> The bug occurs and is reproducible when the message is delivered to node A and then \
> fetched by the client from node B. If the message is delivered to and fetched from \
> the same node, the message does not get duplicated. 
> I'm attaching the debug logs from both nodes for a full example transaction. The \
> message is delivered via lmtp to node A with UID 175261, fetched and deleted on \
> node B and then appears again with the new UID 175262. 
> Thanks,
> Jan
> 
> 
> [...]


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