domainname or
                              domainname1.domainname2 are valid;
                              user@domainname is invalid. 
                                       NoteYou can use wildcards for domain names. For example, use
                                              
                                          *.domain.com to include all sub-domains for
                                             "domain.com". However, you cannot use two asterisks in the user name
                                             or domain name portion of the address, or use the "@" symbol.
                                             *.*@domain.com and user@*.* are both invalid. | 
                                 
                                       NoteWhen searching an LDAP group for the internal addresses, you can use wildcards at
                                             the beginning
                                             and/or at the end of the LDAP group if you have specified Microsoft
                                             Active Directory or Sun iPlanet Directory as the LDAP server. 
                                        | 
                                 
                                    TipImport both the exact domain and all sub-domains for best results. 
                                        | 
                              
                                    NoteThe import file must be a text file containing one domain per line. You can use
                                          wildcards when specifying the domain. 
                                        |