On 26.02.2013, at 21:23, Timo Sirainen <t...@iki.fi> wrote:
> On 26.2.2013, at 22.20, Michael Grimm <trash...@odo.in-berlin.de> wrote:

>> Actually, while going through all those files and writing this mail, all 
>> missing messages appeared in my MUA, and I do find in both maillogs:
>> 
>> @mx1:
>> | dovecot: dsync-local(test): Error: dsync(vm...@mx2.tld): I/O has stalled, 
>> no activity for 600 seconds
>> | dovecot: dsync-local(test): Error: Remote command process isn't dying, 
>> killing it
>> 
>> @mx2:
>> | dovecot: dsync-local(test): Error: dsync(vm...@mx1.tld): I/O has stalled, 
>> no activity for 600 seconds
>> | dovecot: dsync-local(test): Error: Remote command process isn't dying, 
>> killing it
> 
> Ah, this explains the behavior. I had hoped that with the redesign there was 
> practically no way to cause this kind of I/O stalling.

JFTR: Timo was right: this kind of stalling has not been caused by 
dovecot/replicator/dsync, no it was solely my fault: I had had my firewall 
configured in such a way that those ssh connections between both servers were 
by far to limited (rate of new connections over a time interval) for my test 
scenario. Now, after removing those limitations all mails are synchronized 
immediately without any more stalling.

Sorry for bothering you,
Michael

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