Your users access their Hosted Exchange Email mailboxes either using Outlook® Web Access or an email client.
Outlook Web Access
Using a Web browser, your users can go to owa.yourdomain.com, and then log in to their Hosted Exchange Email mailboxes. The URL they use depends on which version of Hosted Exchange Email your account uses. For more information, see Finding Your Hosted Exchange Email Version.
Exchange 2007 — mail.ex1.secureserver.net
Exchange 2010 — mail.ex2.secureserver.net, mail.ex3.secureserver.net, or mail.ex4.secureserver.net
With browsers older than Internet Explorer 6, you can only access the OWA Light Version.
NOTE: Exchange 2010 accounts require at least Internet Explorer 7, Firefox® 3.0.1, Chrome™ 3.0.195.27, or Safari® 3.1.