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I dont think that you can. OWA is web access. I am not aware, even in 2010 that you can restrict it by location.
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I dont think that you can. OWA is web access. I am not aware, even in 2010 that you can restrict it by location.

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do you want to completely remove public OWA access or restrict it to few users ?
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do you want to completely remove public OWA access or restrict it to few users ?

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I want to restrict public access to a few users while maintaining internal access to all users. &nbsp;
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I want to restrict public access to a few users while maintaining internal access to all users.  

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Have you got an ISA server? Then you can make an ISA rule allowing access for only certian users to the OWA from the public IP of the ISA server. <br />
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Have you got an ISA server? Then you can make an ISA rule allowing access for only certian users to the OWA from the public IP of the ISA server.




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No, we do not have an isa server. 
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Currently we have set up a majority of our users to access their email using OWA (Exchange 2010). &nbsp;They do this when they are at work so the access is internally. &nbsp;However, we also allow a certain group of our employees public access to OWA. &nbsp;What I want to do is restrict the majority of users from accessing OWA publicly while maintaining their access internally. &nbsp;Any ideas on how to do this is greatly appreciated.
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Currently we have set up a majority of our users to access their email using OWA (Exchange 2010).  They do this when they are at work so the access is internally.  However, we also allow a certain group of our employees public access to OWA.  What I want to do is restrict the majority of users from accessing OWA publicly while maintaining their access internally.  Any ideas on how to do this is greatly appreciated.

Restrcit public access to Outlook Web App.

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

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.