On Mon, 20 Sep 2004 09:58:49 +1000, Paul Aitchison <paul.a@xxxxxxxxxxxxxx> wrote: > http://www.MSExchange.org/ > > HI all, > > Got a really strange issue happening at one of our client sites. > > If you send an email internally, Outlook returns a "These recipients > were not found in the database or emails are not unique. /O=<client > name>/OU=First Administrative Group/CN=Recipients/CN-Darren " > > This is happening for all internal users. I've tried creating a couple > of test users and trying to send to them - same error. If I check the > X400 address of the users it is correct. I'm not sure why Exchange is > reporting this error when sending to them. > > This server is an SBS2000 server with Exchange 2000 SP3 applied. > > Any ideas would be greatly appreciated. Thoroughly review all of the event logs and find out if anything on the SBS server has been changed since this started happening. Make a backup of the system while you are at it. Also run dcdiag from http://www.microsoft.com/windows2000/techinfo/reskit/tools/default.asp. ...D