[Dovecot] dsync replication errors

[Gedalya]

On 02/17/2013 03:21 AM, Timo Sirainen wrote:
> Although there's still some mail
> duplication problem with maildir that doesn't log any errors about it.
> I'm not sure why that happens.

While you're around, Timo :-)

I've had such an issue recently with 2.2.18, using Maildir, where emails 
were being replicated circularly creating more and more duplicate copies.
Replication should have been unidirectional in reality since changes 
were being made on one side only.
Nothing coherent was being logged. Only "Warning: Maildir 
/srv/mail/domains/.../Maildir: Expunged message reappeared, giving a new 
UID .. " appearing on the receiving side.
Is there any intelligence on the matter, or should I isolate this down 
and report it from scratch?