Please can someone help to resolve the problem of emails getting stuck in my Outbox. This has been an intermittent problem over months, which has always managed to sort itself out, but not this time. I have tried re-opening the mails and re-sending, re-booting the machine and dragging to drafts and telling it to send and nothing is working. I can receive emails and send emails from webmail, but can only receive through Zimbra.
Any assistance would be greatly appreciated as I'm so desperate I'm about to install a new email client, any recommendations!!