I have a strange problem.
I have a Notebook (Win XP) that I use both at work and at home.
Using this Notebook and Firefox I get this results when connecting to Zimbra:
Home with VPN up: Timeout
random other external network: works fine
At home without VPN and at other networks I use a dyndns address and portforwarding.
With VPN I use the internal IP.
Both at home and at work I can ping the server and I can connect to Zimbra using Opera.
One thing that might have to do with it.
At work we have 3 class B networks that are connected via a router:
Server and Laptop are in the 10.10.0.0 subnet.
At home I have a 10.1.1.0 class C network, so any IP I have at home are valid at work.
Interestingly I have the same issue with my PC at home (Linux), Firefox not connecting, Opera works.
Any ideas why this does not work??