Hi, I have windows 2000 server as a domain controller, i installed active directory, DSN and exchange 2000. i can send emails to any user in the exchange, i can send emails to any user in the internet for example my email in hotmail BUT when i try to send from my hotmail account to my email at my exchange server, it cannot be received , where is the problem in my pop3 configuration ? or smpt ? and how i can fix this problem ? For my dns i can nslookup it because i configured the MX record well but i am not sure if anyone can ping mydns.com could it be the problem ? or is it in my exchange server or active directory ?