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For One user or for all users?<br />
<br />
You need to change the 'Send As' on the users mailbox properties.
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For One user or for all users?

You need to change the 'Send As' on the users mailbox properties.

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How do I set a default from field address in Exchange 2010 OWA for a user to be different from his principal name? For example, I want his emails to be always sent from <b>company@domain.com</b> but it always defaults to <b>username@domain.loc</b>.<br />
<br />
Thank you.
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How do I set a default from field address in Exchange 2010 OWA for a user to be different from his principal name? For example, I want his emails to be always sent from company@domain.com but it always defaults to username@domain.loc.

Thank you.

Exchange 2010 OWA. Default send as address

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.