.Net DirectoryService connection to Novell eDirectory (LDAP)

Can anyone shed some light on to the reason I am getting this error. "System.Runtime.InteropServices.COMException: The specified domain either does not exist or could not be contacted."

 Here is my code I'm using:

...
using System.DirectoryServices;

    public static DirectoryEntry getDirectoryEntry()
    {
        return new DirectoryEntry("LDAP://ldap.mycompaniesname.com, o=baseOrg, ou=scopeUnit", "username", "password");
    }

  public string test()
    {
        string x = string.Empty;

        DirectoryEntry e = LdapUtil.getDirectoryEntry();
        DirectorySearcher src = new DirectorySearcher(e);
        SearchResultCollection r;
        src.Filter = "(*findMe*)";
        r = src.FindAll();

        x = r[1].ToString();
        e.Close();
        src.Dispose();
        r.Dispose();

       return x;
    }