we have an Exchange 2007 Sp2 organisation. we are using the name "dimain1.com" as default accepted domain " authoritative domain. now, we need to add a new accepted domain for our internal users, this new name will be used with the old one for some days and then we will delete the old one and will use just the new name. i added a new accepted domain and configured it as authoritative. i also configured the default adress email policy to generate the new smtp adress emails for our internals users. i want to make this adress as the reply one and i want to configure Outlook Anywhere (which is already configured for my old domain name). i want to know: 1- how to do it (step by step). 2- what is the impact for our outlook anywhere users? 3- can i use my old certificate for autodiscover services? thanks in advance :) monham

Hi, If clarify you are just changing the SMTP address not the whole domain, if just smtp then: http://www.petri.co.il/change_primary_email_address_in_exchange_2007.htm For auto-discover have a look into this post : http://forums.msexchange.org/m_1800498245/mpage_1/key_/tm.htm#1800498245 Do let us know if this doesn't helpRipu Daman Mina | MCSE 2003 & MCSA Messaging

Hello Daman, thanks for your reply i'll check this and be back to you byemonham

Hi based in your second link, i found the KB http://support.microsoft.com/kb/940881 which it will be a good solution for my. i'll try to test it in my LAB and i'll update you thanksmonham