I have DC and exchange 2003 installed on win 2003 machine. I also have exchange 2010 installed for the same domain on win 2008 R2. Now when im trying to create mailbox using win 2003 DC and point to exch 2010 database the next button is greyed out and i am not able to create mailbox in exch 2010 usind active firectory users and computers. I am able to create mailbox in exch 2003 using Active directory and then move ot exch 2010. I am also able to create mail box in exch 2010 using exch 2010 console. Please help me in understanding will i be able to create exch 2010 mailbox using active directory configured in win 2003.
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