I recently installed a new Zimbra server and everything was working great. I decided to download/install Zimbra Desktop to evaluate the features and functionality. Zimbra Desktop wouldn't authenticate, so I followed instructions on a Zimbra Forum post (found here) that said I needed to run zmtlsctl https in order to get Zimbra Desktop to authenticate over SSL. After I ran that command, I no longer receive emails from external email servers. Does anyone know what could have happened?
Thanks for the help!