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Shared Mailboxes MS Exchange 2010

Posted on 2014-10-04
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Last Modified: 2015-02-25
Hi all,

This relates to Exchange 2010.

I’m not at work at the moment, so I can’t relay the exact error messages but I’ll provide you with the detail so that you can get the gist of what I have or haven’t done.

We currently have an issue with shared mailboxes, whereby we have given a user full access, yet when the user attempts to send an email as that mailbox user we receive a message informing us that the user who is attempting to send the message does not have permission to do so.

Initially we tried adding the group for which the users who we require to read and send as belong to but this did not work. So, to simplify the whole process I have added a test user and given that user full permission to the mailbox yet that user still cannot send as the mailbox user.

What I've tried (none of this worked):

Recreating a shared mailbox

Creating a user mailbox (in place of the shared mailbox) for testing purposes to see if this would work (it didn't)

Providing both send as and full access concurrently

Providing send as only (as well as full access only)

I've gone to the properties of the mailbox and provided send on behalf (although this is not what we want)

Setting the permission in Active Directory instead

Clearing the local Outlook cache

Restarting the exchange server

Ensuring replication between our domain controllers has occurred (this is set to 20 minutes)

Removing the test user from any group policy settings just in case of conflicts

Everything I try seems to fail. We do currently have some shared mailboxes where some users do ‘send as’ but for whatever reason we are unable to recreate this scenario with a new one. I've checked the settings against those working mailboxes but cannot identify any differences. I've checked various forums where people have reported similar issues but still no avail.

If anyone can shed some light on this (preferably with instructions as I’m not advanced with Exchange) then it would be much appreciated.

Note: Forgot to mention that we have the very latest service pack and updates already installed.

Thanks in advance.
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Question by:Amb_Man
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by:WalkaboutTigger
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Just making sure here...

The mailbox(es) in question is set to type:shared.

Open ADUC.  Make sure Advanced settings are visible in the View menu option.
Find the user associated with the mailbox and open the properties of that user.
Select the Security] tab then select Advanced and the Advanced Security Settings for User window will appear.
At the bottom, make certain that Include inheritable permissions from this object's parent is checked.

This should resolve the sending issues.
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by:Amb_Man
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Hi WalkaboutTigger, thanks for the suggestion. Unfortunately I've already checked this and even tried removing and reapplying to see if that would make a difference.

It seems really strange. As a workaround we have given users direct access to login into the mailbox, which isn't ideal but there was no alternative :S
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vishal_breed earned 500 total points
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