Hi Guys,
First I wanted to say awesome product! Second, I need help so I'm here to get it. I have Zimbra installed and working perfectly but I want to put it behind a reverse proxy server. The server is running ubuntu linux with apache and mod_proxy. Once I get it working I am going to enable mod_security and we'll be ready to rumble.

That said, the reverse proxy doesn't work properly. When I attempt to read email from a proxied connection I get communications errors upon clicking on the email. Then when I take a look at the log files I see:

172.16.15.82 - - [04/Mar/2009:20:20:02 -0500] "POST /service/soap/ModifyPrefsRequest HTTP/1.1" 503 437 "http://suck.netragard.com/" "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_6; en-us)
AppleWebKit/525.27.1 (KHTML, like Gecko) Version/3.2.1 Safari/525.27.1"

So, every time there is a post, the error is generated. Can anyone give me any help on how to solve this? Does anyone have a working mod_proxy + Apache2 config that they could show me? Thanks much in advace!