Thanks, I've been using that site to check my own settings, hadn't checked bigger sites like that though. -----Original Message----- From: Aman Bedi [mailto:gurkirpal.bedi@xxxxxxxxxxx] Sent: Monday, April 25, 2005 15:33 To: [ISAserver.org Discussion List] Subject: [isalist] RE: Split DNS Questions... http://www.ISAserver.org Go to dnsstuff.com and try to look for mx record entires , say for example for hotmail.com. you will see multiple mx entries and each mx has multiple A entries.