Failure communicating with remote server. Please try again later.

Debug message: Connection is closed

Exception:

com.zimbra.common.service.ServiceException: system failure: Folder sync failed
ExceptionId:sync-mbox-rysavy@agora.cz:1309437359195:3886ad19d6ac87fe
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.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 '/Trash' failed
ExceptionId:sync-mbox-rysavy@agora.cz:1309437359195:3886ad19d6ac87fe
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)
... 10 more
Caused by: java.io.IOException: Connection is closed
at com.zimbra.cs.mailclient.imap.ImapConnection.sendR equest(ImapConnection.java:501)
at com.zimbra.cs.mailclient.imap.ImapRequest.send(Ima pRequest.java:95)
at com.zimbra.cs.mailclient.imap.ImapRequest.sendChec kStatus(ImapRequest.java:111)
at com.zimbra.cs.mailclient.imap.ImapConnection.doSel ectOrExamine(ImapConnection.java:208)
at com.zimbra.cs.mailclient.imap.ImapConnection.selec t(ImapConnection.java:195)
at com.zimbra.cs.datasource.imap.RemoteFolder.select( RemoteFolder.java:188)
at com.zimbra.cs.datasource.imap.ImapFolderSync.syncM essages(ImapFolderSync.java:269)
at com.zimbra.cs.datasource.imap.ImapSync.syncMessage s(ImapSync.java:330)
... 12 more

If issue persists please post description and debug information here.

Server Lotus Domino 8.5.2 on Linux RedHad 5
win7 on desktop