Are these only happening on replies, perhaps?
Regards, Michael B. Smith MCSE/Exchange MVP http://TheEssentialExchange.com From: Cesare' A. Ramos [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 30, 2008 2:59 PM To: MS-Exchange Admin Issues Subject: MS Exchange 2007 - Internal e-Mail Hello to all. We have recently introduced MS Exchange 2007 to a network and at times certain users are having / receiving errors when sending e-Mail to internal users. They are selecting the addresses from the Global Address Book but receive a message such as: 'John Doe' This recipient e-mail address was not found in the recipient e-mail system. Microsoft Exchange will not try to redeliver this message for you. Please check the recipient e-mail address and try resending this message, or provide the following diagnostic text to your system administrator. Again this happens at times to some users.. Thoughts. CAR ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~