Plesk Firewall stops ASP Web Mail

[ozcomm]

I am in the process of migrating all my clients from a Cobalt web server to my recently acquired Windows/Plesk server.

I have hit a major stumbling block, the in-built Plesk firewall stops my ASP web mail from working. If it is disabled everything works fine. The web mail forms in question are on ASP pages and using CDO. I have looked at the Plesk firewall "pfwmng.js" file and TCP port 25 is enabled in Normal Firewall mode. However webmail fails to work (I am not using Panic Mode).

Any ideas out there?

Thanks