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How to turn off option to allow users to send e-mail posing as other users.

Posted on 2006-11-03
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Last Modified: 2010-04-08
In the Outlook 2003 full client using Word as the editor, the E-mail toolbar has an Options drop down that lets you view/enter BCC and From fields. Trouble with having access to the From field is, this appears to let anyone in the company appear to be anyone else. Needless to say, we've got concerns bogus, lewd or slanderous e-mails popping up. Is this something I could lockdown on the client-side or can I do this on our Exchange 2003 SP2 server-side?
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Question by:jgisc
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by:glenn_1984
ID: 17870819
When I try to do this, as administrator, on my Outlook...I get the error:

The following recipient(s) could not be reached:

     real_name@yahoo.com on 11/3/2006 5:44 PM
            You do not have permission to send to this recipient.  For assistance, contact your system administrator.
            MSEXCH:MSExchangeIS:/DC=aci/DC=officentz/DC=acintz:ACI1
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by:jgisc
ID: 17870840
It sounds like it might be a rights issue.
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by:glenn_1984
ID: 17871040
Forgot to ask...what happens when you try this?
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by:jgisc
ID: 17871073
When click on the From: button, I am allowed to select an entry from the GAL. When I send the e-mail, the recipient receives it from whatever name I have selected from the GAL. I do not see the message in my own Sent Items list, but it does appear in the "impostered" sender's Sent Items list.
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glenn_1984 earned 500 total points
ID: 17871384
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by:jgisc
ID: 17882049
Further tests indicate that I have Domain Admin and Enterprise Admin rights, which would allow me to "imposter" others. When a regular user attempts this same action, they are returned with the error message as seen in your first reply. I have narrowed the list down to a couple of other users that apparently have this right, and am removing that right from them. Thanks for your help.
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