dovecot Digest, Vol 156, Issue 44

[Ron Cleven]

> On 26 Apr 2016, at 21:52, Hauke Fath<hf at spg.tu-darmstadt.de>  wrote:
>> >
>> >On Tue, 26 Apr 2016 18:20:00 +0300, Timo Sirainen wrote:
>>> >>This should be a good release.:)
>> >
>> >Would this release address the "reappearing emails" issue that 2.2.23
>> >introduced?
> I guess you're talking about replication. I'm not aware of any specific change in v2.2.23 that could have even potentially caused it. I also don't know how I could reproduce it. Can you use git bisect to find out the specific change that broke it?
>
> The only thing I remember even remotely related to this ishttps://github.com/dovecot/core/commit/950a6e61d6c2dac961ce031bdd8b2895bc32b827  but that was supposed to only fix things and I can't think of how it might break things.
>
> One possibility is that nothing broke this in v2.2.23. I've heard about the same issue for a long time. Maybe you just suddenly started having this problem now and it would have happened even with the old Dovecot version.

I was (perhaps one of) the people who reported "reappearing emails" with 
2.2.10 in the context of Maildir with replication under CentOS 7.  I had 
spent a great deal of time making it reproducible, difficult because 
there was a timing element.  In that context, 2.2.23 absolutely fixed 
the problem which was absolutely related to a timing issue with 
replication.  If I remember right, this person was reporting a 
similar-sounding problem, but it did not involve replication and was not 
under CentOS 7.  Creating a script that reproduces the problem is an 
important first step.  Good luck.