We have contacts in our active directory that do not have an "Exchange e-mail address" and only have an email under the General > E-mail properties.
There is clearly an address that outlook can send to... please can anyone help with this matter?
From: System Administrator
Sent: 15 October 2013 10:15
Subject: Undeliverable: Testing
Your message did not reach some or all of the intended recipients.
Sent: 15/10/2013 10:15
The following recipient(s) cannot be reached:
IT Test on 15/10/2013 10:15
The message could not be delivered because the recipient's destination email system is unknown or invalid. Please check the address and try again, or contact your system administrator to verify connectivity to the email system of the recipient.