Hello all. I had a couple of email issues this morning. users sending emails and them bouncing back saying they had tried to deliver but they had timed out or the following message Running Windows server 2008 SBS An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator. i thought i would use the exchange troubleshooting assistant. the first message i get after selecting my exchange server is the following IPv6 Protocal Not supported and Network adaptor IPv6 Address not supported. Im not sure if this is related but thought id ask before i got any further. Not much about this on the internet other than not to disable IPv6

Hi, The diagnostic text are missing. Please provide complete NDR. Thanks. Vishal Ramnani MCITP - Exchange 2007, MCSE Messaging, MCTS - Win 2008 Config

I recommend that you use Telnet to test SMTP communication to the remote mail server.