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I am having problem understanding below.<br />
<br />
1) if emails doesn't go to any body outside my organization, what troubleshooting steps I should take vis a vis if it doesn't go out to 1 person<br />
2) how email flow works internally in organization ( from outlook to exchange)<br />
3) how email flow works from outside<br />
<br />
I have exchange 2010 and outlook 2010
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I am having problem understanding below.

1) if emails doesn't go to any body outside my organization, what troubleshooting steps I should take vis a vis if it doesn't go out to 1 person
2) how email flow works internally in organization ( from outlook to exchange)
3) how email flow works from outside

I have exchange 2010 and outlook 2010

exchange, outlook, active directory

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.