Hello, I've just installed Zimbra 8.0.0 64 FOSS edition on Ubuntu 12.04.1 x64. My problem is that the web login on port 80 doesn't work, I can't reach the page, even from the same LAN. Of course I can ping the server. But the server doesn't seem to be listening on port 80. The login on port 443 (https) and the administration console both work. What could cause the problem? I am quite at a loss about what to do. Can anyone help?