Trying to connect to exchange server via IMAP. I can see the existing folder structure created, but unable to access/see emails.

Error seen when tailing mailbox.log:

2008-05-03 12:05:07,843 ERROR [sync-timer-email@email.com] [] offline - sync failure: mailboxname
com.zimbra.common.service.ServiceException: system failure: A133 NO Access denied.
ExceptionId:sync-timer-email@email.com:1209830707734:0a6395926343bfa1
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:253)
at com.zimbra.cs.datasource.ImapImport.importData(Ima pImport.java:411)
at com.zimbra.cs.datasource.DataSourceManager.importD ata(DataSourceManager.java:152)
at com.zimbra.cs.mailbox.LocalMailbox.syncAllLocalDat aSources(LocalMailbox.java:255)
at com.zimbra.cs.mailbox.LocalMailbox.sync(LocalMailb ox.java:293)
at com.zimbra.cs.mailbox.LocalMailbox.syncOnTimer(Loc alMailbox.java:235)
at com.zimbra.cs.mailbox.DesktopMailbox$1.run(Desktop Mailbox.java:113)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: javax.mail.MessagingException: A133 NO Access denied.;
nested exception is:
com.sun.mail.iap.CommandFailedException: A133 NO Access denied.
at com.sun.mail.imap.IMAPFolder.getUIDValidity(IMAPFo lder.java:1730)
at com.zimbra.cs.datasource.ImapImport.importData(Ima pImport.java:371)
... 7 more
Caused by: com.sun.mail.iap.CommandFailedException: A133 NO Access denied.
at com.sun.mail.iap.Protocol.handleResult(Protocol.ja va:328)
at com.sun.mail.imap.protocol.IMAPProtocol.status(IMA PProtocol.java:727)
at com.sun.mail.imap.IMAPFolder.getUIDValidity(IMAPFo lder.java:1722)
... 8 more




Note: Using the same information to access exchange via IMAP using thunderbird without an issue.