I have a one root domain and 4 additional domain for this root in one forest. I want to know how replication is happening. Can i always log in to additional domain ? what is peer domain then? My requirement is different sites are having additional domain on level 2 network and on level 3 network on root domain is there. how domain login will happens in this case and i can change policy in additional domain?

KCC manages replication automatically, it create replication connections based on site info. Make sure ports are opened correctly: http://technet.microsoft.com/en-us/library/bb727063.aspx You can slways logon other domains in the same forest. Domains in one forest has built-in Trusts and authentication will be forwarded automatically. With proper rights, you can change policy in additional domain. Thanks This posting is provided "AS IS" with no warranties, and confers no rights. Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hello, as already mentioned by Mervyn Zhang, default is automatically configured. Here are more details about replication and waht is going on: http://technet.microsoft.com/en-us/magazine/2007.10.replication.aspx http://technet.microsoft.com/en-us/library/cc782376(WS.10).aspx See here about requried ports, if you use a firewall between them: http://technet.microsoft.com/en-us/library/dd772723(WS.10).aspxBest regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.