The disaster recovery doc on MS' website (http://www.microsoft.com/Exchange/techinfo/deployment/2000/E2Krecovery.asp) recommends not.
I think it's mostly a performance issue. I've got it running both ways at different sites; some clients have limited resources and no choice. I haven't done any hard performance comparisons, but the ones that aren't DC's definitely seem to perform better. I got in a jam during my upgrade process and had to call Uncle Bill's Boys-they recommended that I not have the Exchange server be a DC. --Jon Jon Farr Server/Network Support Computers in Ministry List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
