Using BHSD228 webmail authentication with secure certificate
When you go to the webmail link, you will now see the following up up box:

Here you can either click YES (and see that every time), or View Certificate.
If you click to View the Cert, you can install that Cert into your PC so you don’t get the prompt each time you visit webmail.
To Install the Cert:
Click View Certificate from the above pop up box.

Click Install Certificate
Click Next

Choose the default and click Next

The next screen should pop up. Just click Finish

Click OK

Now you should never see a cert pop up when you use webmail.