Hi All I have a configured exchange 2003 that is using an internal domain "x.com" Users need to send email to y@x.com but this email is not a part of the organization. The exchange prevent them from sending an email to y@x.com because it is authoritative for the domain "x.com" and y@x.com is not configured on this exchange. How can i work around this problem? Thank you.MCITP Enterprise Messaging Administrator, MCITP Enterprise Administrator, MCSE, MCDBA

Yes, all you described is right. Buts thats the way Exchange works. There is no way to send an Email to a Domain which your Excange Server is responsible for outside of the same Exchange Server.regards Thomas Paetzold visit my blog on: http://sus42.wordpress.com

The first post in this thread is incorrect. While Exchange 2003 by default presumes it is responsible for all email for a domain, it is certainly possible to have email delivered to another server. This is known as Sharing the SMTP address space and is covered by this KB article: http://support.microsoft.com/kb/321721 Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Hi Elie, Also you could see the following article, it will help you. Exchange 2003 SMTP Namespace Sharing: http://www.msexchange.org/tutorials/Exchange-2003-SMTP-Namespace-Sharing.html Best regards, SerenaPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.