Authorative domains, Remote domains and Internal Relay domains

Confused!

In Exchange 2007 > Org Config > Hub Transport > Remote Domains, I have the following listed:

Name: MyDomain.com
Domain: *.MyDomain.com

Name: Partner1.com
Domain: Partner1.com

Name: OldDomain.com
Domain: *.OldDomain.com

Then, if I go to Accepted Domains

Name: MyDomain.com
Accepted Domain: MyDomain.com
Type: Authorative

Name: OldDomain.com
Accepted Domain: OldDomain.com
Type: Authorative

Name: Contoso.com
Accepted Domain: Contoso.com
Type: Internal Relay

Questions:

1. Does this mean my Exchange org 'owns' MyDomain.com and OldDomain.com?

2. What's the status of Partner1.com

3. What's the status of Contoso.com

4. I know people in the company send emails to mailbox@japan.olddomain.com. Does Exchange own japan.olddomain.com as well? I notice that in Remote Domains, one of the Domain names was *.olddomain.com

5. If I had a domain name (e.g. example.com) is there an easy way to find out if Exchange own this domain, or it is an external one?
LVL 2
bruce_77Asked:
Who is Participating?
 
Malli BoppeConnect With a Mentor Commented:
1.)With MyDomain.com and OldDomain.com do you accept all the email for this domain or do you forward  the mail outside your AD forest.Remote domains are used when you want forward email from your exchange org to outside your network.
2.)Partner1 is think is an internal relay domain.Who owns that domain
3.) Same as above
4.)I don't think its  a remote domain. Dod you ownolddomain.com. Whats your internal AD domain name.
5.)Exchange owns the domain if its an accepted and authoritative domain.

Read the below link to get an understanding
http://technet.microsoft.com/en-us/library/bb124423(EXCHG.80).aspx
http://technet.microsoft.com/en-us/library/aa996309(EXCHG.80).aspx
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