Exchange 2007 User / Group / Mailbox Security

I'm not having any luck researching on this so I'm hoping someone can give me some links or search phrases or ideas.  This Tony Redmond book I have is really awful.

I want to manage mailboxes based on group membership.  For example, Group A can't send outside the organization, Group B has different storage and send limits, Group C can only send / receive from whitelisted addresses....  

I also want mailboxes grouped when viewing the global address book.  It's awful how all mailboxes and contacts are just lumped in there.

Any help?
ctarbetAsked:
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TyBeattyCommented:
well the GAL portion you can do with Address Lists.  Your users would have to click the drop down but they could look at adderss lists that are setup however you choose to configure them.
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Khurram Ullah KhanCommented:
OK you can achieve the above functionalities by using diferrent exchange 2007 functionalities.
1. Group A can't send outside the organization
You need to create a distribution group for this containing all these types of users and create a HUB (orginzational rule) for this distribution group for this functionality.
2. Group B has different storage and send limits
You can achieve this by creating a new mailbox Database and move all the required mailboxes in it and apply your restriction on DB level.
3. Group C can only send / receive from whitelisted addresses.
You can also achieve this by using first procedure

the last part of query will automatically achieve becuase when you create a distribution group it will automatically appear in your GAL after your last address book update
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ctarbetAuthor Commented:
Boy, that was a great answer!

One more detail: can I whitelist / blacklist entire domains with respect to distribution group membership?
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Khurram Ullah KhanCommented:
Yes you need to create rule like this,

from users Inside organization
  and sent to users Outside organization
send Delivery not authorized, message refused to sender with 5.7.1
except when text .domain.com appears in a To

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ctarbetAuthor Commented:
Thanks!  That will give me plenty to run with.
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ctarbetAuthor Commented:
Perfect. See all posts for more info
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