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Check if everyone is given full permissions:<br />
<br />
Get-MailboxDatabase -Identity &lt;DB&gt; | Get-AdPermissions
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Check if everyone is given full permissions:

Get-MailboxDatabase -Identity <DB> | Get-AdPermissions

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You grant User B Full Access Permission for User A’s Mailbox.<br />
<br />
Refer<br />
&nbsp;<a href="http://blogs.technet.com/b/ehlro/archive/2012/04/06/full-mailbox-access-rights-send-on-behalf-send-as.aspx" rel="ugc">http://blogs.technet.com/b/ehlro/archive/2012/04/06/full-mailbox-access-rights-send-on-behalf-send-as.aspx</a>
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You grant User B Full Access Permission for User A’s Mailbox.

Refer
 http://blogs.technet.com/b/ehlro/archive/2012/04/06/full-mailbox-access-rights-send-on-behalf-send-as.aspx [http://blogs.technet.com/b/ehlro/archive/2012/04/06/full-mailbox-access-rights-send-on-behalf-send-as.aspx]

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Full mailbox doesn't grant Send As permissions.<br />
<br />
Simon.
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Full mailbox doesn't grant Send As permissions.

Simon.

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This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.

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I have a problem on Exchange Server 2007 running on 2008 R2 where users are able to send emails from other accounts by clicking on the from box. I have checked the permissions in exchange and user accounts as well as delegations &nbsp;and made sure they are not in any admin groups. any ideas would be grateful.<br />
<br />
Thanks
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I have a problem on Exchange Server 2007 running on 2008 R2 where users are able to send emails from other accounts by clicking on the from box. I have checked the permissions in exchange and user accounts as well as delegations  and made sure they are not in any admin groups. any ideas would be grateful.

Thanks

Exchange 2007 users able to send emails from other accounts

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

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.