We are using the Zimbra Mail server in our company and currently we are experiencing a critical issue with the Zimbra mail server. None of the company users are able to send emails to external sites if they are outside the company. Basically, emails get stuck in the outbox and cannot be sent. We used the Zimbra outlook connector also but it is not working at all.
I would be grateful if someone could help us on the above issue
Thanks in advance.