http://www.amset.info/exchange/groups-autoreply.asp
http://forums.devshed.com/mail-server-help-111/exchange-2003-distribution-group-343601.html
http://forums.whirlpool.net.au/forum-replies-archive.cfm/455379.html
http://episteme.arstechnica.com/eve/forums/a/tpc/f/99609816/m/330008478731/inc/-1
http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_22641949.html