exchange path through network

Good morning.

I would like to know how Exchange pushes through the network. Can you share some insight ? For example, does Exchange travel through a global catalog server ?  Hoe does it trsverse active directory ?  Is there any difference about travel from Exchange 2003 to Exchange 2010 ? I'm looking for a clearer understanding. Thanks.

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rorybreenConnect With a Mentor Commented:
Okay, i'm not overly clear on what your after. However as a start check out this link
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