You can access the webmail interface from this address:

• http://webmail.premiumdnn.com

Follow the instructions for Rackspace mailbox in doubt or contact your administrator to know your mailbox's type:

• Rackspace mailbox software configuration 
  • We recommend using IMAP over POP to access your emails
  • You should setup sync if you want your calendars, tasks and notes to be available from everywhere
• Exchange mailbox software configuration

Follow the instructions for Rackspace mailbox in doubt or contact your administrator to know your mailbox's type:

• Rackspace mailbox mobile device configuration
  • We recommend using IMAP over POP to access your emails
• Exchange mailbox mobile device configuration