upgrade to 14.4.5784 IMAP folders not re-syncing
Problem reported by digital.iway - 11/3/2015 at 10:34 AM
Submitted
I upgraded to 14.4.5784 this morning from the previous minor build and now mail in IMAP folders are not all syncing when using outlook 365. 
 
Inbox is fine, but I have a folder outside of the inbox with many sub folders and only a few of those sub folders are re-syncing mail.
 
The re-sync of all IMAP users is also bringing the server down off and on.
 
is anybody else having this issue?  how can I force a specific folder to re-sync mail?

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1
David Costlow Replied
We updated last night and are having difficult syncing with Outlook 2016.  Outlook shows as non-responding during the sync process and has to be repeatedly restarted.   We are not able to complete an email to send before the non-responding behavior occurs.
 
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Paul Blank Replied
Sounds like a serious issue. I'm pretty scared to upgrade at this point.
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David Costlow Replied
I have forced Outlook to only sync one inbox at a time and it seems to prevent the non-responding issue. It is taking a long time to sync.
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digital.iway Replied
after a full 12 hours the server load has reduced, but I still have IMAP clients that have no mail in their sub folders, but the mail is on the server showing in their webmail.  This is serious and ST should at least address this thread.
 
 
I would also like to have an explanation of why the server needs to re-sync my users? is this a compliance standard or a performance reason? The release notes state the below? 
 
"UID validity values of 0 are no longer used when syncing with IMAP as required by the IMAP RFC This will cause all folders synced with IMAP that had a UID validity value of 0 to re-sync all messages, resulting in a large spike in bandwidth usage for a short time after installation"
 
 
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Paul Blank Replied
This is for compliance, it appears. My suggestion is that (somehow) ST puts in a switch that allows the administrator to turn on this modification PER USER, so that this mod can be rolled out slowly, in order to avoid mail server overload. Any comments on this?
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digital.iway Replied
I opened a ticket on this because I just cannot wait and this is mission critical for me anyway. I also have EAS accounts that are also not syncing so the problem is growing.
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Paul Blank Replied
I'm interested to know how this is working out for you.
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Paul Blank Replied
See the following thread (posted not long ago by ST)...
 
 
 
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digital.iway Replied
my ticket is still open and ST said the release of this build was to primarily correct outlook 2016 sync issues as your post below states.

I am still having issues regarding all folders syncing in outlook 2013 and the only way I could get EAS clients to sync was to remove the accounts from their devices and re-add them back. I removed one IMAP account and re-added which also worked syncs mail fine, but beware if anyone does this you will lose all of your contacts, calendar, autocomplete,notes, tasks. (export all ahead of time using pst)
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Kristóf Gyetvai Replied
i have the same sync error on outlook 2007 after downgrade older version too!
gykristof

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