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Delivery has failed to these recipients or groups:

I am trying to assign permissions to another user to be able to send on behalf of another user account- here is the error...You can't send a message on behalf of this user unless you have permission to do so. Please make sure you're sending on behalf of the correct sender, or request the necessary permission.

i have already given the user the send as permission and full access to manage the account on exchange 2010....help?
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FOX999085S
Asked:
FOX999085S
4 Solutions
 
Brian GeeCommented:
Just to check... could we check the Delegates settings on the local Outlook client to ensure that the delegation settings are reflecting here as well (and if not, apply here accordingly)?

Outlook 2003: Tools > Options > Delegates tab.
Outlook 2010: File > Info Account Settings > Delegate Access.
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FOX999085SAuthor Commented:
i'm using outlook 2007- i have given the user owner rights (delegate)
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Brian GeeCommented:
Have these Delegate rights been applied (or verified) on the Outlook client of the user who needs to have emails sent out for them? I know you said you made these changes on the Exchange level, but I did wanted to make sure that they are applied or even showing up at the client level as well.

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Brian GeeCommented:
I have seen that although a user has been provisioned full access (Owner) rights to a Mailbox, they will typically need explicit Delegate permissions set in order to have another user send on behalf of them.

Outlook 2007: Tools > Options > Delegates tab.
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ckeshavCommented:
It would take some time for the permission to reflect.
Hope you have followed the correct procedure.

You may try giving "Send As" permission for that user using Exchange Management Console
1.    Start the Exchange Management Console.
2.    In the console tree, click Recipient Configuration.
3.    In the result pane, select the mailbox for which you want to grant the Send As permission.
4.    In the action pane, under the mailbox name, click Manage Send As Permission. The Manage Send As Permission wizard opens.
5.    On the Manage Send As Permission page, click Add.
6.    In Select User or Group, select the user to which you want to grant the Send As permission, and then click OK.
7.    Click Manage.
8.    On the Completion page, the Summary states whether the Send As permission was successfully granted. The summary also displays the Exchange Management Shell command that was used to grant the Send As permission.
9.    Click Finish.

Restart Outlook and then in new email, Select the From field and add the ID of the New Mailbox and send the mail

Procedures extracted from
http://www.cryer.co.uk/brian/msexchange/exch_howto_grant_send_as.htm
http://technet.microsoft.com/en-us/library/aa998291%28EXCHG.80%29.aspx
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MegaNuk3Commented:
It can take up 2 hours for 'Send As' permissions to take effect.
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