As the title suggests,
This outlook web access is run through Microsoft Exchange Server 2003, and I'm assuming is also based off the 2003 version of Outlook.
When you log in it works for approximately 30 seconds and then logs you out and you have to log in again, usually loosing all your work.
The issue is based in a workplace environment and the web access service is heavily relied upon for remote workers when they're out on jobs.
If it helps there is certificate issues with the web access as well which I initially thought was the issue, but now I think it's a server issue of some kind in the way that Outlook Web Access is configured.
Any help would be greatly appreciated.