I have installed an exchange 2007 on a win 2008 DC in my test lap. i laso have a win 2003 sp2 DC running. when i view server configuration -> properties ont he server -> system settingsin i can only see the win 2003 DC not the 2007 one. this also means that if i turn off the win 2003 dc exchange stops working. Is there any way to make exchange recognise the local DC as valid for GC? yes the 2008 is GC i have checked. I did try to dcpromo the 2003 away for test andi get a lot of errors in the event log Log Name: ApplicationSource: MSExchange ADAccessDate: 2/25/2008 1:08:33 AMEvent ID: 2114Task Category: TopologyLevel: ErrorKeywords: ClassicUser: N/AComputer: server02.xxx Description:Process MSEXCHANGEADTOPOLOGYSERVICE.EXE (PID=1812). Topology discovery failed, error 0x80040a02 (DSC_E_NO_SUITABLE_CDC). Look up the Lightweight Directory Access Protocol (LDAP) error code specified in the event description. To do this, use Microsoft Knowledge Base article 218185, "Microsoft LDAP Error Codes." Use the information in that article to learn more about the cause and resolution to this error. Use the Ping or PathPing command-line tools to test network connectivity to local domain controllers. Log Name: ApplicationSource: MSExchange ADAccessDate: 2/25/2008 1:08:33 AMEvent ID: 2080Task Category: TopologyLevel: InformationKeywords: ClassicUser: N/AComputer: server02.xxxDescription:Process MSEXCHANGEADTOPOLOGYSERVICE.EXE (PID=1812). Exchange Active Directory Provider has discovered the following servers with the following characteristics: (Server name | Roles | Enabled | Reachability | Synchronized | GC capable | PDC | SACL right | Critical Data | Netlogon | OS Version) In-site:server02.xxxCDG 1 0 0 1 0 0 0 0 0Out-of-site: put the win 2003 back as DC the events goes away.

I have enabled ipv6 on the server and now it can use the server for DC and GC. So i suppect that it requere ipv6 to be, though i cant seems to remember that beaing explicited sateded in the install documentation.

I confirm. if you try to install exchange 2007 on windows 2008 you've to enable ipv6 otherwise the hub transport will not start.

I'm having a similar problem with only my 2003 DC/GC showing up in the Exchange Console Server Settings.Exchange 2007 with SP1 installed on Windows 2008 Server. I have a Windows 2003 DC/GC and a WIndows 2008 DC/GC in the same subnet and site.Firewall's on all of the servers are off. The Exchange 2007 Server always authenticates to the 2003 DC/GC. Based on Event2080, seems like Netlogon to the 2008 DC isn't working?Process MSEXCHANGEADTOPOLOGYSERVICE.EXE (PID=1944). Exchange Active Directory Provider has discovered the following servers with the following characteristics: (Server name | Roles | Enabled | Reachability | Synchronized | GC capable | PDC | SACL right | Critical Data | Netlogon | OS Version) In-site:2003DC1.lgis.local CDG 1 7 7 1 0 1 1 7 12008DC1.lgis.local CDG 1 7 7 1 0 1 1 0 1Out-of-site:I'm using static IPv4 addresses, and have IPv6 enabled but nothing set. So much work just to decomission a 2003 DC/GC =PIdeas?Thanks+++++++++++++++++++++++++++++++++++++++Update: I just realzied my 2008 DC/GC doesn't have a NETLOGON or SYSVOL share! yikes!! Anyone else have this problem?

you must also give the ipv6 an actual address if not it wont work.

Marcel, Is that just for this scenario? I have spoken with colleagues who have not had to configure IPv6 when the Exchange 2007 SP1 server is on a Windows 2008 Member Server (i.e. non-Domain Controller).

you must also give the ipv6 an actual address if not it wont work. Hi, can you help me please? Under giving an actual address you mean thqa I need to enter IPv6 address manually?