Hi all, I am looking for some documentation on what is MS's best practise on the above topic. I have looked everywhere and on most search engines. I want to have some form of official backup for a proposal not to put the exchange server on a DC, but I dont have any luck getting the docs. Thanks Jaen The information in the e-mail is confidential. This e-mail is intended solely for the addressee. Access to this e-mail by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying , distribution or any action taken or omitted in reliance on this, is prohibited and may be unlawful. Whilst all reasonable steps are taken to ensure accuracy and integrity of information and data transmitted electronically and to preserve the confidentiality thereof, no liability or responsibility whatsoever is accepted if the information or data is, for whatever reason, corrupted or does not reach its intended destination.