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I have full mailbox access to a shared User Mailbox. When I click &quot;New&quot; I can make the &quot;From:&quot; field be a specific user, which sends the mail as that user and not on behalf of.<br />
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Using Outlook 2007 and Exchange 2010.<br />
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In Outlook when composing a new message &gt;&nbsp;Options &gt;&nbsp;Fields &gt;&nbsp;Show From
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I have full mailbox access to a shared User Mailbox. When I click "New" I can make the "From:" field be a specific user, which sends the mail as that user and not on behalf of.

Using Outlook 2007 and Exchange 2010.

In Outlook when composing a new message > Options > Fields > Show From

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We are also using Outlook 2007 and we are filling out the from field as you mentioned.
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We are also using Outlook 2007 and we are filling out the from field as you mentioned.

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It was a miss understanding between the differences of manage full access and manage send as permissions
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It was a miss understanding between the differences of manage full access and manage send as permissions

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I migrated several accounts from exchange 2003 to exchange 2010. &nbsp;WHen the accounts were in exchange 2003 people had full access to these mailboxes and could send an e-mail out as if they were that account. &nbsp;No send on behalf of needed.<br />
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Now that they are in exchange 2010 if people have full access permissions they can not send unless they also have send on behalf of. &nbsp; Then it adds the send on behalf of to the e-mail. &nbsp;I have this with mailboxes that are both user mailboxes as well as shared mailboxes.
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I migrated several accounts from exchange 2003 to exchange 2010.  WHen the accounts were in exchange 2003 people had full access to these mailboxes and could send an e-mail out as if they were that account.  No send on behalf of needed.

Now that they are in exchange 2010 if people have full access permissions they can not send unless they also have send on behalf of.   Then it adds the send on behalf of to the e-mail.  I have this with mailboxes that are both user mailboxes as well as shared mailboxes.

Trying to send e-mail out of mailbox without send on behalf of

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.