You do not have a mail file specified. Use File Mobile Edit Current Location... to set it.

What happened

You didn't specify a mail file in your current Location document.

What you can do

  1. Ask your IBM® Domino® administrator for the names of your home/mail server and mail file.
  2. Click File > Mobile Edit Current® Location.
  3. Under Mail, check the name of and path to your mail file. If it's in a subdirectory, specify your mail file in this format: name of subdirectory\name of mail file. For example:
    mail\dbcooper.nsf
  4. Save the current location document.

Try using mail again. If it doesn't work, see your Domino administrator to be sure that a mail file has been created for you.