dear All, i really get confused, i need some one to help. i have here 4 domains registered outside as the following :- 1. SIKO.COM 2. RTOU.COM 3. ERTO.COM 4. KADE.COM i want only one exchange server to server all of this Domains. so, i have one Recipint Update Policy on the exchange which is the default. what is the Best ? 1. create another Recipint update policy for each SMTP domain , and assiosiate it with Specific Users ? or :- 2. Modify the default RUP, and add multiple SMTP Address on it, and then when i create user, i will choose his Primary SMTP Address ? Which methode is correct ? 3. Do i need to create another storage group for each Domain, and the users for this domain, will be under this Storage group , or what ? can any one help me in that , or expalin to me what is happen ? your quick help will be highly appricated . --------------------------------- Sell on Yahoo! Auctions - No fees. Bid on great items.