Check the option "Filter the recipients who are not in Directory" in the Recipient filtering or add the e-mail address of the left out user in the recipient filtering. An undeliverable message will be sent to the sender stating that the recipient does not exist.But I am not sure if this message can be changed to "this person is no longer with the company" Regards, Mahadevan ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Farhan Khan Sent: Wednesday, June 21, 2006 9:10 AM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Email Replies Some of the employees resigned from the company now I want to setup that when anyone sends an email to previous employees an email notification is sent from the administrator or from the receivers email id to the sender that this person is no longer with the company.......how can it be possible? I suppose it can not be done by setting out of office replies? or is there any configuration at server side that can reply if any mails comes to the specific email addresses? TIA Farhan A. Khan Confidentiality Statement: This message is intended only for the individual or entity to which it is addressed. It may contain privileged, confidential information which is exempt from disclosure under applicable laws. If you are not the intended recipient, please note that you are strictly prohibited from disseminating or distributing this information (other than to the intended recipient) or copying this information. If you have received this communication in error, please notify us immediately by return email.