Hi Ok i have created a simple exchange environment. One pdc, mail server added to that domain and created the mail server. Its working fine. Now i ve got to know that there are 2 other existing domains that have to have their emails hosted at this same mail server. Is that possible? If so how...plz discuss a solution.... I ll put it in simple words, pdc.abc.com and mail.abc.com exist hence user1@xxxxxxx is recieving and sending emails. Now i want a user user2@xxxxxxx and another user3@xxxxxxx to receive mails on this same mail server. Frankly i m not just asking a blank question i have the idea that multiple domains can be hosted but only if the active directory information is available for all the domains. I have already tested 2 domains but i created both the pdc's first in the same forest and then the mail server. Now the mail server is functional but i need to add another domain to be hosted on this very mail server. I hope i havent confused things....plz bring some observations...and guide... THANX in advance.... Umar