It's the strangest problem, I can duplicate it on the server itself by going to http:// localhost:8080 or https:// localhost:7071, I see that it is listening on 8080 and 7071, but when I try to hit it via browser, sometimes it works and sometimes not! The box isn't doing much, it just times out. A reboot doesn't do anything.
I'm not sure if this is related or not, when I try from the outside it just doesn't work, then I logon to the server and open a browser, then it usually works. Then I try from the outside again and that works suddenly too. For a minute or two anyway. It also times out on the server again.
I don't see anything in zimbra.log or /var/log/messages, any ideas?