Cannot Send Mail Offline

[cdavitian]

I'm getting an error message when I try to send mail offline. Presumably, sent messages should be queued in the outbox until the connection is restored. Instead the below error pops up after I press the "Send" button.

Cannot connect to server.
________________________________________
msg: Cannot connect to server.
code: EMPTY_RESPONSE
method: SendMsgRequest
detail:

[jjzhuang]

Could you follow the steps here: Yahoo! Zimbra Desktop FAQ - Zimbra :: Wiki