I don't understand your concern. Create/modify a recipient policy to affect all newly created users. Write a script/program to modify all existing users. You might want to batch the updates, because it'll cause a fairly large replication set if you change the proxyAddresses attribute on 4000 accounts all at once. ________________________________ From: Sanz de Leon, Juan Carlos [mailto:jcsanz@xxxxxxx] Sent: Wednesday, February 01, 2006 5:46 AM To: [ExchangeList] Subject: [exchangelist] Best method to distinguish between SMTP address of Employees and Consultants http://www.MSExchange.org/ Dear gurus, Anyone know: What is Microsoft´s best practice under this scenario ? Our management has made the decision to make a distinction in the email SMTP address of employees who work for our company versus consultants who even thou work for us, are not employees of it. With this in mind, we need to find the best decision on what's the best method to implement and the implications of using one method versus another with regards to Exchange. Perhaps some of you could give me examples of what your companies do with regards to Exchange users under these scenarios ( consultants, external users, etcc..). I would also like to know the pros and cons of using one method versus another.... and how it might affect Active Directory, SingleSignOn, Our Antivirus Systems or even OWA. Or even if you know of any KB articles that discuss this scenario. Scenario: -- Currently, all our users ( Consultants 4000 mailboxes versus Employees 6000 mailboxes) have the same email address domain @ourcompany.com -- We have Exchange 2000 with about 50 Sites and 100 servers in 1 Forest and about 50 domains. ( 10,000 mailboxes) -- Currently we share the same servers and make no distinction the SMTP address of a consultant versus employees. Alternatives we are considering: a) Changing the smtp address of consultants adding (-consultant) such as: joesmith-consultant@xxxxxxxxxxxxxx <mailto:joesmith-consultant@xxxxxxxxxxxxxx> b) Adding another sub-domain called consultants such as: joesmith@xxxxxxxxxxxxxxxxxxxxxxxxx <mailto:joesmith@xxxxxxxxxxxxxxxxxxxxxxxxx> c) Creating a whole new domain just for them: joesmith@xxxxxxxxxxxxxxxxxxxxxxxxxx Our concern of this decision is mostly on the impact it might have on Active Directory and Exchange... and also what alternative is the least intrusive on the users and migration. We are not considering moving consultants to other Exchange 2000 servers. Any ideas or suggestions would be appreciated, as well as comments the alternatives we are considering. Thanks, Juan Carlos ________________________________ Advertencia / Confidentiality Notice Este envío es confidencial y está destinado únicamente a la persona a la que ha sido enviado. Puede contener información privada y confidencial. Si usted no es el destinatario al que ha sido remitida, no puede copiarla, distribuirla ni emprender con ella ningún tipo de acción. Si cree que lo ha recibido por error, por favor, notifíquelo al remitente. This transmission is confidential and intended solely for the person to whom it is addressed. It may contain privileged and confidential information. If you are not the intended recipient, you should not copy, distribute or take any action in reliance on it. If you believe that you have received this transmission in error, please notify the sender. Aeropuertos Españoles y Navegación Aérea ~ CounterSpy Enterprise: Editor's Choice WindowsIT Pro Magazine! ~ ~ <http://www.sunbelt-software.com/CounterSpyEnterprise.cfm> ~ ________________________________ Advertencia / Confidentiality Notice Este envío es confidencial y está destinado únicamente a la persona a la que ha sido enviado. Puede contener información privada y confidencial. Si usted no es el destinatario al que ha sido remitida, no puede copiarla, distribuirla ni emprender con ella ningún tipo de acción. Si cree que lo ha recibido por error, por favor, notifíquelo al remitente. This transmission is confidential and intended solely for the person to whom it is addressed. It may contain privileged and confidential information. If you are not the intended recipient, you should not copy, distribute or take any action in reliance on it. If you believe that you have received this transmission in error, please notify the sender. Aeropuertos Españoles y Navegación Aérea ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: michael@xxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx