ZCO sync failures?

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Erik-NA
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Joined: Wed Dec 14, 2016 1:06 pm
Location: Sweden
ZCS/ZD Version: Zimbra Collaboration 9.0.0

ZCO sync failures?

Post by Erik-NA »

Historically, we have had big problems with sync failures in Outlook. Users are therefore rather tired of having to change (lower) the synctoken on a function that is supposed to work flawlessly. Not to mention the worry of not knowing when Outlook stops receiving email after a sync failure occurs.

ZCO for Zimbra 9.0.0 Patch 28 fixed ZBUG-2984 (Intermittently, Outlook would not sync emails with large metadata.) has reduced the problem a lot, but not eliminated it. We are still getting sync errors in ZCO that seem to be related to various calendar events such as invitations, reminders, etc.

Does anyone else share this experience with ZCO and Outlook 365?
Amol.Suryawanshi
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Re: ZCO sync failures?

Post by Amol.Suryawanshi »

Thank you for sharing your experience after ZBUG-2984 fixed. Will you be able to supply some test account or MIME where the calendar item is having synchronization problems?

Amol Suryawanshi,
Zimbra Engineering Team
Last edited by Amol.Suryawanshi on Tue Apr 11, 2023 7:51 am, edited 1 time in total.
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wentum
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Re: ZCO sync failures?

Post by wentum »

Erik-NA wrote: Fri Jan 13, 2023 1:57 pm Historically, we have had big problems with sync failures in Outlook. Users are therefore rather tired of having to change (lower) the synctoken on a function that is supposed to work flawlessly. Not to mention the worry of not knowing when Outlook stops receiving email after a sync failure occurs.

ZCO for Zimbra 9.0.0 Patch 28 fixed ZBUG-2984 (Intermittently, Outlook would not sync emails with large metadata.) has reduced the problem a lot, but not eliminated it. We are still getting sync errors in ZCO that seem to be related to various calendar events such as invitations, reminders, etc.

Does anyone else share this experience with ZCO and Outlook 365?
Hello Erik-NA,

we are experiencing the same on various instances. I gave up on this a long time ago...
When it comes to sync errors we first delete those .idmv Files and if this is not successful we are deleting all .idmv and .zdb Files (complete resync of all items...)

Not really nice... I know...

Regards
Joerg
Amol.Suryawanshi
Zimbra Employee
Zimbra Employee
Posts: 6
Joined: Thu Mar 16, 2023 6:47 am

Re: ZCO sync failures?

Post by Amol.Suryawanshi »

Delete the .idmv and .zdb files is a workaround. Please do share the above requested details if you receive them in the future.

Amol Suryawanshi,
Zimbra Engineering Team
Last edited by Amol.Suryawanshi on Wed Apr 12, 2023 6:01 am, edited 1 time in total.
Erik-NA
Posts: 27
Joined: Wed Dec 14, 2016 1:06 pm
Location: Sweden
ZCS/ZD Version: Zimbra Collaboration 9.0.0

Re: ZCO sync failures?

Post by Erik-NA »

We have decided to leave Zimbra and migrate to Office 365 due to these pesky sync failures in Outlook. Especially when it happens you do not know it has happened since new emails doesn't show up in your Outlook inbox.

Sadly, Zimbra is a great piece of software, except ZCO.
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