Question

The following recipient(s) could not be reached

Exchange Server, Non-Delivery Reports, Bounced email, Exchange

I have not been sucessfully in reply too or sending any originating emails to the following Domain (johnxxxx@alameda.k12.ca.us) from withing my organization. I keep getting a bounce back everytime I send using my exchange server.

" Your message did not reach some or all of the intended recipients.

Subject: Test Email from IST
Sent: 3/17/2008 10:51 PM

The following recipient(s) could not be reached:

Alameda Alt Client 2 on 3/17/2008 10:51 PM
The format of the e-mail address is incorrect. Check the address, look up the recipient in the Address Book, or contact the recipient directly to find out the correct address.
<mail1.istmanagement.com #5.1.3> "

Confirm where the NDN is coming back from by looking at the message headers. If it is coming back from the remote system, you will need to contact an IT staff person at that organization to troubleshoot this issue. Can you send to these addresses using gmail or yahoo?

If the NDN message is coming from your system, it could be a DNS lookup issue. In other words, your system is unable to resolve the alameda.k12.ca.us MX record.