I have this problem when i try connect external account imap from ZIMBRA SERVER 6.0.12

Caused by: javax.security.auth.login.LoginException: Re-Authentication Failure
com.zimbra.common.service.ServiceException: system failure: Unable to connect to IMAP server: DataSource: { id=TestId, type=imap, isEnabled=false, name=Test, host=mx.server.com, port=143, connectionType=cleartext, username=account@domain.net, folderId=-1 }

I have Zimbra Server but problem there isn't.

I have problem with Zimbra Server 6.0.12

Is follow this solution for my problem ???

zmlocalconfig | grep javamail_pop3_enable_starttls

If we obtain the following value:

javamail_imap_enable_starttls = true

Move it to false

zmlocalconfig -e javamail_imap_enable_starttls = false

Then restart the mailbox

zmmailboxdctl restart

Let kme know you answer.

Thanks in advance