Re: cyrus sync errors from 3.0.18 -> 3.4.8-patched

Hi Ellie

i think I found the problem:

In in cyrus-imapd-3.4.8/imap/sync_support.c:1485 decode_annotations
the sync server is expecting a MODSEQ for Annotations, but the older  
version of
cyrus did not send the MODSEQ


It seems this feature was introduced between 3.0 and 3.2

I have created a new Issue to track this
https://github.com/cyrusimap/cyrus-imapd/issues/4967

Kind Regards

    Michael Menge

Quoting ellie timoney <[email protected]>:

> Hi Michael,
>
> On Thu, 4 Jul 2024, at 12:15 AM, Michael Menge wrote:
>> Hi Ellie,
>>
>> I was able to copy the failed mailbox to our test servers and I am still
>> able to reproduce the error.
>
> Interesting, so that suggests it's something about that mailbox  
> that's leading to the bad protocol talk.  I wonder what?
>
>> To me it seams that the failed command in the telemetry does only
>> contain minimal
>> sensitive data. If you want I can send the "APPLY MAILBOX" command
>> directly to you.
>
> Please do, thanks.  I'll see if I can figure out what the replica is  
> complaining about, and maybe that will shed some light on the  
> underlying cause.
>
>> I will also try to debug it myself, but as we are sill in the process
>> of migrating form
>> 3.0 to 3.4 it may take some days,
>
> Sure, good luck. :)
>
> Cheers,
>
> ellie
>
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Michael Menge                          Tel.: (49) 7071 / 29-70316
Universität Tübingen                   Fax.: (49) 7071 / 29-5912
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