Code:
Impossibile comunicare con il server remoto. Riprova più tardi.

Messaggio di debug: no such folder id: 1431

Eccezione:

com.zimbra.cs.mailbox.MailServiceException$NoSuchItemException: no such folder id: 1431
ExceptionId:mid=2:1286519998343:afdd9deac9c9d10c
Code:mail.NO_SUCH_FOLDER Arg:(itemId, IID, "1431")
	at com.zimbra.cs.mailbox.MailServiceException.NO_SUCH_FOLDER(MailServiceException.java:180)
	at com.zimbra.cs.mailbox.MailItem.noSuchItem(MailItem.java:1167)
	at com.zimbra.cs.mailbox.Mailbox.getItemById(Mailbox.java:2008)
	at com.zimbra.cs.mailbox.OfflineMailbox.getItemById(OfflineMailbox.java:216)
	at com.zimbra.cs.mailbox.Mailbox.getFolderById(Mailbox.java:2798)
	at com.zimbra.cs.mailbox.Mailbox.createFolder(Mailbox.java:6039)
	at com.zimbra.cs.mailbox.InitialSync.syncFolder(InitialSync.java:542)
	at com.zimbra.cs.mailbox.InitialSync.syncContainer(InitialSync.java:447)
	at com.zimbra.cs.mailbox.InitialSync.initialFolderSync(InitialSync.java:230)
	at com.zimbra.cs.mailbox.InitialSync.initialFolderSync(InitialSync.java:385)
	at com.zimbra.cs.mailbox.InitialSync.initialFolderSync(InitialSync.java:385)
	at com.zimbra.cs.mailbox.InitialSync.initialFolderSync(InitialSync.java:385)
	at com.zimbra.cs.mailbox.InitialSync.resume(InitialSync.java:196)
	at com.zimbra.cs.mailbox.InitialSync.resume(InitialSync.java:180)
	at com.zimbra.cs.mailbox.MailboxSync.sync(MailboxSync.java:186)
	at com.zimbra.cs.mailbox.OfflineMailbox.sync(OfflineMailbox.java:140)
	at com.zimbra.cs.mailbox.OfflineMailbox.syncOnTimer(OfflineMailbox.java:121)
	at com.zimbra.cs.mailbox.DesktopMailbox$1.run(DesktopMailbox.java:437)
	at java.util.TimerThread.mainLoop(Unknown Source)
	at java.util.TimerThread.run(Unknown Source)

Se il problema persiste, carica qui una descrizione con le informazioni di debug.
on Win XP SP3 and zimbra server 5.0.5