I am just getting ready to move mailboxes and doing one last check on things. Under the toolbox, I was testing the Mail Flow Troubleshooter and when using the parameter "Users are receiving unexpected non-delivery reports when sending messages" when the tool retrieves basic server information: I get two warnings: IPv6 Protocol not supported (Exch svr not capble of supporting IPV6 addresses ...)and Network Adapter IPv6 Addresses not supported (Exch svr is not capable of supporting IPv6... An IPv6 address was found on adapter......)IPV6 is not disabled on my E2K7 servers.I can I say HELPPPPPP.thanks -eee

Are you asking how to disable ipv6 support in Windows 2008?

No I know how to disable IPV6 I am asking why am I getting the above error when I use the MS Exchange Troubling shooting assistant to test mail flow?thanks

Can you post the exact warning messages?

Hi,There are various issues while running Exchange server with IPv6. You can get more information why IPv6 is not recommened with Exchange 2007 from the below course. http://social.technet.microsoft.com/Forums/en-US/exchangesvrtransport/thread/5ac614ee-e4fb-41d9-88f0-363f912634b1http://social.technet.microsoft.com/Forums/en-US/exchangesvrtransport/thread/2e9a6263-7863-4d13-9480-7611db222e9e_________Sanjay

Sanjay,I am a fan of your many Exchange technotes!Not to split hairs but IPV6 with any version of E2K7?-eee