Yes, you can. But, you need to install the ADC service in your Windows 2000 DC. And you must setup a two way replication CA between Exch 5.5 and Win 2k AD. Setting up 2 way replication is a very delicate job. You must be very clear on exactly whta you are replicating. Refer teh MS Knowledge base. There is a good article on this subject. Regards, Raj -----Original Message----- From: Amos [mailto:amos@xxxxxxxxxxxx] Sent: February 27, 2002 7:11 PM To: [ExchangeList] Subject: [exchangelist] create mailbox http://www.MSExchange.org/ in exchange 5.5 that running at NT4 server, mailbox can created automaticaly when we add new user. can i do like that in windows 2000 to create automatically mailbox for exchange 5.5 sp4 and exchange 2000? I need your comments.... Thank you AmoS ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: psraj@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')