I have an end user who sometimes receives bounce-back emails when sending to a workmate. However the intended recipient does receive the original email.
Both users are on the same Exchange 2010 server. Does anyone know how to resolve this issue?
From: Microsoft Outlook Sent: Tuesday, 21 February 2012 9:18 AM To: Joe Smith Subject: Undeliverable: Delivery has failed to these recipients or groups: Frank Spencer The email address that you entered couldn't be found. Check the address and try resending the message. If the problem continues, please contact your helpdesk. Diagnostic information for administrators: Generating server: server.domain.local IMCEAEX-Frank+40domain+2Ecom+2Eau@domain.local #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ## Original message headers: Received: from server.domain.local ([fe80::3264:c532:29f2:fc75]) by server.domain.local ([fe80::32b4:c582:29f2:fc75%17]) with mapi id 14.01.0355.002; Tue, 21 Feb 2012 09:17:30 +1100