My relocation from one server to another (Rhel5 Zimbra NE 4.5.6) still has problems.

I can bring up the Admin screen on port 7071 on the server and from a client.
However , when I select a single account and try "view mail" it opens a new window and fails "cant establish a connection to the server at mail.domain "
I also can't connect from the Outlook/Zimbra client so I am assuming that it just isn't listening on port 443.
zmcontrol shows everything is running.

Has anyone got any ideas?

thanking you in anticipation....