Yahoo Emails do not sync

[sauravrc]

I have two yahoo accounts and one sync fine for the emails and contacts. The other does not sync the emails with Yahoo. I still have all the emails unread in my yahoo account while ZD shows me a red circle with and x and does not sync. Apologies if there is another thread where it has been resolved as i could not find it.

Exception:

com.zimbra.common.service.ServiceException: system failure: Folder sync failed
ExceptionId:sync-mbox-sauravrc@yahoo.com:1306009266796:2dc5e823b748ad31
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:248)
at com.zimbra.cs.datasource.imap.ImapSync.importData( ImapSync.java:168)
at com.zimbra.cs.datasource.imap.ImapSync.importData( ImapSync.java:135)
at com.zimbra.cs.offline.OfflineImport.importData(Off lineImport.java:94)
at com.zimbra.cs.offline.YMailImport.importData(YMail Import.java:53)
at com.zimbra.cs.datasource.DataSourceManager.importD ata(DataSourceManager.java:312)
at com.zimbra.cs.datasource.DataSourceManager.importD ata(DataSourceManager.java:276)
at com.zimbra.cs.mailbox.DataSourceMailbox.syncAllLoc alDataSources(DataSourceMailbox.java:441)
at com.zimbra.cs.mailbox.DataSourceMailbox.sync(DataS ourceMailbox.java:471)
at com.zimbra.cs.mailbox.DataSourceMailbox.syncOnTime r(DataSourceMailbox.java:408)
at com.zimbra.cs.mailbox.SyncMailbox$1.run(SyncMailbo x.java:278)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: com.zimbra.common.service.ServiceException: system failure: Synchronization of folder '/Inbox' failed
ExceptionId:sync-mbox-sauravrc@yahoo.com:1306009266796:2dc5e823b748ad31
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:248)
at com.zimbra.cs.datasource.imap.ImapSync.syncFailed( ImapSync.java:392)
at com.zimbra.cs.datasource.imap.ImapSync.syncMessage s(ImapSync.java:333)
at com.zimbra.cs.datasource.imap.ImapSync.syncFolders (ImapSync.java:243)
at com.zimbra.cs.datasource.imap.ImapSync.importData( ImapSync.java:163)
... 11 more
Caused by: com.zimbra.common.service.ServiceException: system failure: Error while fetching message for UID 64
ExceptionId:sync-mbox-sauravrc@yahoo.com:1306009266796:2dc5e823b748ad31
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:248)
at com.zimbra.cs.datasource.imap.ImapFolderSync.check CanContinue(ImapFolderSync.java:1187)
at com.zimbra.cs.datasource.imap.ImapFolderSync.fetch Messages(ImapFolderSync.java:858)
at com.zimbra.cs.datasource.imap.ImapFolderSync.fetch Messages(ImapFolderSync.java:750)
at com.zimbra.cs.datasource.imap.ImapFolderSync.syncM essages(ImapFolderSync.java:346)
at com.zimbra.cs.datasource.imap.ImapSync.syncMessage s(ImapSync.java:330)
... 13 more
Caused by: java.lang.NullPointerException
at com.zimbra.cs.datasource.imap.ImapFolderSync$1.han dleFetchResponse(ImapFolderSync.java:824)
at com.zimbra.cs.datasource.imap.ImapFolderSync.fetch Messages(ImapFolderSync.java:855)
... 16 more

If issue persists please post description and debug information here.