%MAILSERV-F-LSTNOTAVA, Index of lists is presently unavailable

      No mailing list index information is currently available.
      This may or may not be a temporary condition. Try using the
      DIRECTORY/LIST command in the meantime.

  %MAILSERV-F-NOMAILLIST, mailing lists are not enabled

      The mail server is not configured to operate as a list server.

  %MAILSERV-W-MAXPARM, too many parameters

      You supplied a parameter after the LISTS command. The LISTS
      command does not accept any parameters. Resend the command
      without specifying any parameter.