Hi there am receiveing this error so cannot sync zimbra to my yahoo mail .Please can you assist.

Please find the debug msg below:

Debug message: Unexpected end of stream

Exception:

com.zimbra.common.service.ServiceException: system failure: Synchronization of folder '/Inbox' failed
ExceptionId:mid=2:1266182656521:53e04f410de96436
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:253)
at com.zimbra.cs.datasource.ImapSync.syncFailed(ImapS ync.java:298)
at com.zimbra.cs.datasource.ImapSync.syncMessages(Ima pSync.java:260)
at com.zimbra.cs.datasource.ImapSync.syncFolders(Imap Sync.java:195)
at com.zimbra.cs.datasource.ImapSync.importData(ImapS ync.java:152)
at com.zimbra.cs.offline.OfflineImport.importData(Off lineImport.java:88)
at com.zimbra.cs.offline.YMailImport.importData(YMail Import.java:53)
at com.zimbra.cs.datasource.DataSourceManager.importD ata(DataSourceManager.java:157)
at com.zimbra.cs.mailbox.LocalMailbox.importData(Loca lMailbox.java:417)
at com.zimbra.cs.mailbox.LocalMailbox.syncAllLocalDat aSources(LocalMailbox.java:389)
at com.zimbra.cs.mailbox.LocalMailbox.sync(LocalMailb ox.java:431)
at com.zimbra.cs.mailbox.LocalMailbox.syncOnTimer(Loc alMailbox.java:361)
at com.zimbra.cs.mailbox.DesktopMailbox$1.run(Desktop Mailbox.java:437)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: com.zimbra.common.service.ServiceException: system failure: COPY failed
ExceptionId:mid=2:1266182656520:53e04f410de96436
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:253)
at com.zimbra.cs.datasource.ImapFolderSync.checkCanCo ntinue(ImapFolderSync.java:1293)
at com.zimbra.cs.datasource.ImapFolderSync.syncMessag eFailed(ImapFolderSync.java:1259)
at com.zimbra.cs.datasource.ImapFolderSync.moveMessag e(ImapFolderSync.java:1102)
at com.zimbra.cs.datasource.ImapFolderSync.moveMessag es(ImapFolderSync.java:1069)
at com.zimbra.cs.datasource.ImapFolderSync.syncMessag es(ImapFolderSync.java:232)
at com.zimbra.cs.datasource.ImapSync.syncMessages(Ima pSync.java:257)
... 12 more
Caused by: java.io.EOFException: Unexpected end of stream
at com.zimbra.cs.mailclient.MailInputStream.peekChar( MailInputStream.java:128)
at com.zimbra.cs.mailclient.imap.ImapInputStream.read Text(ImapInputStream.java:234)
at com.zimbra.cs.mailclient.imap.ImapInputStream.read Text(ImapInputStream.java:228)
at com.zimbra.cs.mailclient.imap.ImapResponse.readRes ponse(ImapResponse.java:48)
at com.zimbra.cs.mailclient.imap.ImapResponse.read(Im apResponse.java:41)
at com.zimbra.cs.mailclient.imap.ImapConnection.readR esponse(ImapConnection.java:628)
at com.zimbra.cs.mailclient.imap.ImapConnection.nextR esponse(ImapConnection.java:622)
at com.zimbra.cs.mailclient.imap.ImapConnection.waitF orResponse(ImapConnection.java:541)
at com.zimbra.cs.mailclient.imap.ImapConnection.sendR equest(ImapConnection.java:475)
at com.zimbra.cs.mailclient.imap.ImapRequest.send(Ima pRequest.java:77)
at com.zimbra.cs.mailclient.imap.ImapRequest.sendChec kStatus(ImapRequest.java:81)
at com.zimbra.cs.datasource.RemoteFolder.copyMessage( RemoteFolder.java:112)
at com.zimbra.cs.datasource.ImapFolderSync.moveMessag e(ImapFolderSync.java:1100)
... 15 more

If issue persists please post description and debug information here.