Not sure why this is happenning. Currently doing a trial run ZCS, on RH 5, ZCS 6.10. From within our network I can access ZCS and Admin Console, outside our network I get the logon screen but when I logon in I get cannot display page. I have opened the firewall for HTTP services for my test server. So how can I get the logon screen but it fail when I click Logon In, like it cannot find the page ? Also I can internet email but ZImbra will not receive internet email. I'm sure its some DNS issue. Network Solutions is where the DNS is parked (mailpca.us). I set up DNS the same way I have my current email solutions domain setup.