Welcome to TazMail!
You're probably here to securely check your TazMail on the web. Don't worry, it will go there automatically in a few seconds, using Horde. Remember to use your full email address for the login (e.g. email@example.com).
(BTW, if you're using Microsoft's Internet Explorer, you'll probably see a security message about the certificate -- go ahead and click the link to continue on to the site; it's supposed to do that!)
Just for reference, here's things you can do with TazMail: