Send on Behalf and Send As

Send on Behalf and Send As are similar in fashion. Send on Behalf will allow a user to send as another user while showing the recipient that it was sent from a specific user on behalf of another user. What this means, is that the recipient is cognitive of who actually initiated the sending message, regardless of who it was sent on behalf of. This may not be what you are looking to accomplish. In many cases, you may want to send as another person and you do not want the recipient to be cognitive about who initiated the message. Of course, a possible downside to this, is that if the recipient replies, it may go to a user who did not initiate the sent message and might be confused depending on the circumstances. Send As can be useful in a scenario where you are sending as a mail-enabled distribution group. If someone replies, it will go to that distribution group which ultimately gets sent to every user who is a part of that distribution group. This article will explains how to use both methods.

Send on Behalf

There are three ways to configure Send on Behalf. The first method is by using Outlook Delegates which allows a user to grant another user to Send on Behalf of their mailbox. The second method is having an Exchange Administrator go into the Exchange Management Shell (EMS) and grant a specific user to Send on Behalf of another user. The third and final method is using the Exchange Management Console (EMC).

Outlook Delegates

There are major steps in order to use Outlook Delegates. The first is to select the user and add him as a delegate. You then must share your mailbox to that user.

Go to Tools and choose Options
Go to the Delegates Tab and click Add
Select the user who wish to grant access to and click Add and then Ok

Note: There are more options you can choose from once you select OK after adding that user. Nothing in the next window is necessary to grant send on behalf.

When back at the main Outlook window, in the Folder List, choose your mailbox at the root level. This will appear as Mailbox – Full Name
Right-click and choose Change Sharing Permissions
Click the Add button
Select the user who wish to grant access to and click Add and then Ok
In the permissions section, you must grant the user at minimum, Non-editing Author.

Exchange Management Shell (EMS)

This is a fairly simple process to complete. It consists of running only the following command and you are finished. The command is as follows:

Set-Mailbox UserMailbox -GrantSendOnBehalfTo UserWhoSends

Exchange Management Console (EMC)

Go to Recipient Management and choose Mailbox
Choose the mailbox and choose Properties in Action Pane
Go to the Mail Flow Settings Tab and choose Delivery Options
Click the Add button
Select the user who wish to grant access to and click Add and then Ok

Send As

As of Exchange 2007 SP1, there are two ways to configure SendAs. The first method is having an Exchange Administrator go into the Exchange Management Shell (EMS) and grant a specific user to SendAs of another user. The second and final method (added in SP1) is using the Exchange Management Console (EMC).

Exchange Management Shell (EMS)

The first method is to grant a specific user the ability to SendAs as another user. It consists of running only the following command and you are finished. The command is as follows:

Add-ADPermission UserMailbox -ExtendedRights Send-As -user UserWhoSends

Exchange Management Console (EMC)

Go to Recipient Management and choose Mailbox
Choose the mailbox and choose Manage Send As Permissions in Action Pane
Select the user who wish to grant access to and click Add and then Ok

Miscellaneous Information

No “From:” Button

In order for a user to Send on Behalf or Send As another user, their Outlook profile must be configured to show a From: button. By default, Outlook does not show the From: button. In order to configure a user’s Outlook profile to show the From: button:

Replies

If you are sending as another user, the recipient user might reply. By default, Outlook is configured to set the reply address to whoever is configured as the sending address. So if I am user A sending on behalf of user B, the reply address will be set to user B. If you are the user initiating the sending message, you can configure your Outlook profile to manually configure the reply address.

Conflicting Methods

If you are configuring Send on Behalf permissions on the Exchange Server, ensure that the user is not trying to use the Outlook delegates at the same time. Recently, at a client, I was given the task to configure Send As as well as Send on Behalf. As I was configuring Send As on the server, I found out that the client was attempting to use Outlook Delegates at the same time. Send As would not work. Once the user removed the user from Outlook Delegates and removed permissions for that user at the root level of your mailbox that appears as Mailbox – Full Name, Send As began to work. So keep in mind, if you are configuring Send As or Send on Behalf, use only one method for a specific user.

Elan Shudnow :: Aug.12.2007 :: Exchange ::

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2549 ResponsesSend+on+Behalf+and+Send+As2007-08-12+19%3A03%3A03Elan+Shudnow to “Send on Behalf and Send As”

on 16 Jan 2008 at 4:11 am1Exchange 2007 -- The Monopologue

[...] Send on Behalf and Send As [...]
on 22 Jun 2008 at 6:16 am2How-To: Delegieren von Send-As und Receive-As in Exchange Server 2007 | Server Talk

[...] Elan Shudnow’s Blog: Send on Behalf and Send As [...]
on 05 Jan 2009 at 2:00 am3Exchange 2007

Can we setup ” send behalf on ” for a distribution group.

Thanks
Usman
on 05 Jan 2009 at 8:30 am4Elan Shudnow

You can use the Set-DistributionGroup with the -GrantSendOnBehalfTo
on 05 Jan 2009 at 4:50 pm5Frenchie

I thought your post was going to be the answer to my problem but I am still having an issue similar to what you describe in the “Conflicting Methods” section.

I have a mailbox “Account Payable” that I want want a few users to send “On Behalf of”. I have given the Send On Behalf, Send As and Full permission to those users but if I send it comes as “On Behalf of”. If I take the On Behalf Of permission away, the user i no longer able to even send FROM that mailbox.

I’m not sure how to solve the issue.
Hope you can help.
on 05 Jan 2009 at 7:52 pm6Elan Shudnow

Use the Get-ADPermission for the mailbox and make sure there are no explicitly set denies that would prevent SendAs from working. I’ve had explicit denies cause issues with FullAccess before so it may be the case with you for SendAs.
on 08 Jan 2009 at 2:28 pm7phil

I have a slightly different issue – there are no Send As rights set, yet Administrators have the right to Send As – do you know if this is the default behaviour on Exchange, or is it switched on/off somewhere?
on 08 Jan 2009 at 7:51 pm8Elan Shudnow

This is not the default behavior. There has to be SendAs rights somewhere that someone added.
on 09 Jan 2009 at 1:34 pm9phil

thanks, I think it’s been added in AD. I’d expect that to show in Exchange Management Console but seems like it doesn’t!
on 09 Jan 2009 at 2:22 pm10Elan Shudnow

If it’s not added within the Exchange Management Console, it won’t show. Even if it’s added in the Exchange Management Shell, it won’t show in the Exchange Management Console. It is definitely something I’d like to see changed so the EMC will show it regardless of where you added it.
on 28 Jan 2009 at 9:56 am11Mindcre8r

My problem is like this:

Domain A
Domain B

Domain B is trusted by Domain A (domainB.DomainA.local)

The exchange server resides in Domain A and some users reside in Domain B

When a user logs in with the account from Domain B they can’t send out mail.

I did the following:

Add-MailboxPermission testmbx -AccessRights FullAccess -user jaredz

Set-Mailbox testmbx -GrantSendOnBehalfTo jaredz

Add-ADPermission testmbx -ExtendedRights Send-As -user jaredz

Add-ADPermission user -User “DomainB\User” -Extendedrights “Send As”

“Set-Mailbox “USER” -GrantSendOnBehalfTo “DomainB\User”

But i’m still getting the you are not allowed because you are trying to send on behalf of another sender….

any ideas?
on 02 Feb 2009 at 8:38 pm12Brad

Just thought I’d share this…

Exchange will cache information for two hours. So if you set Send-As permissions, it could take upto 2 hours for it take effect. There is a registry key to shorten this interval “Mailbox Information Cache Age Limit” but it requires a Store restart to take effect.

Hope this helps someone.
on 05 Feb 2009 at 9:57 am13Pam

I am a team lead for an IT help desk. We have a lot of users who use shared e-mail boxes, but many are physicians and their staff who communicate with patients who are not within Exchange. One issue we are seeing that I can’t seem to resolve is this:

Dr. A and Margaret (his nurse) are members of the Osteo shared mailbox within our hospital setting. Delegation has been set up for them correctly.

Patient Jones (outside Exchange) sends an e-mail to Osteo shared mailbox.
Margaret picks up the e-mail from the shared e-mail box and replies to Patient Jones FROM that shared e-mail box’s inbox.
Patient Jones receives e-mail that is NOT ‘On Behalf of” the Osteo shared mailbox, but is FROM Margaret’s individual Outlook account.
Patient Jones replies, but the default To: entry is Margaret’s individual Outlook account, and not to the Osteo shared mailbox.
Patient Jones is now confused as to who to send the e-mail to & Dr A & Margaret are not able to easily communicate and are frustrated.

‘On Behalf Of’ DOES work correctly for this e-mail box when it communicates with another e-mail account WITHIN Exchange. It quits working correctly when sending to an e-mail account outside Exchange Server.

Can you help me understand what’s going on? Thanks.
on 06 Feb 2009 at 12:05 pm14dqueue

I tried the Send-As with a distribution group. Active Directory showed the permission in place. Reapplying the setting in EMS indicated the permission was already in place. Exchange kicked back an error that I was not permitted to Send-As this distribution group. I waited hours, then overnight, and the error persisted.

I had followed a link to Microsoft, which read: “Also, before you perform this procedure, be aware that you cannot send e-mail messages on behalf of a mailbox if the mailbox is hidden from address lists.” Me, I had hidden my distribution list. Revealing the distribution list allowed me to Send-As…

Thank you for your posting. I appreciate it.
on 23 Feb 2009 at 9:10 am15Sophie

What happens then when you create a new meeting ?

Say, user B has got send-as rights on user A mailbox.
User B opens user A mailbox and create a new meeting within it.

How will be indicated:
- the meeting organizer
- the sender of the mail sent to the invitees ?
on 25 Feb 2009 at 4:32 am16unix86.org » How To: Find All Mailboxes with Send-As Permission Assigned

[...] http://www.shudnow.net/2007/08/12/send-on-behalf-and-send-as/ [...]
on 22 Apr 2009 at 1:48 pm17Frenchie

Hi Elan,

I’m still having issues with the “Send As” permissions.
It does not matter what I do, I cannot any of my users to send as. I can get them to send on behalf and I can grant them full access to a mailbox so that they can open it within Outlook 2003 or 2007 but Exchange 2007 will not let me grant “Send As”.

Actually the only person that can “Send As” is me. I can “Send As” anyone as I am the Exchange Admin.
I follwoed your suggestion and ran the Get-AdPermission but it did not give me any further insight on the issue.

I looked to ensure that there was no conflict between “Send As” and “Send On Behalf” but the users that did not have “Send On Behalf” permissions but that had the “Send As” could not do either. For the users that had both, they could only “Send On Behalf Of” and the users that had only “Send On Behalf Of”, well they can in fact “Send On Behalf Of”.

I’m not sure why this is not working. Some people say that it might take up to 2 hours for the Cached info to get refreshed but I have left it overnight and no success…

Any more help from anyone would be greatly appreciated.
on 22 Apr 2009 at 2:00 pm18Elan Shudnow

Not sure other than my conflicting methods. Just curious, but why haven’t you called Microsoft Support by now?
on 23 Apr 2009 at 8:28 pm19Mickp

Here is a handy powershell command I found for enabling multiple users permission to send on behalf of

set-mailbox “mail-box-name” -GrantSendOnBehalfto “Alex Smith”,”Sarah Smith”,”Michael Smith”

Cheers
on 28 Apr 2009 at 11:56 am20kjr

You can try giving the user full mailbox access in active directory. Find the account for the mailbox and on the Exchange Advanced tab click on Mailbox rights. I would grant full mailbox rights.
on 08 Jul 2009 at 9:05 am21suhail

hi ,

it’s realy nice . almost you have cover all the day by day issues which an Engineer’s are facing.

Cheers !!!!
on 27 Jul 2009 at 2:00 am22wing

Hi Elan,

I have this issue is that, User B is delegate of User A. We have grant the right permission to User B in order to send email on behalf of User A. User B have full mailbox right on User A mailbox.
User B does not have Send As permission on the mailbox.

When User B send on behalf of User A, the recipient only can see the email is from User A. There is no indication that the email was send by User B on behalf of User A.

Any idea where have I left out?

Many thanks!!!
Wing
on 29 Jul 2009 at 7:53 pm23Elan Shudnow

Almost seems like someone must have given SendAs permission to user B. Do a Get-ADPermission on user a and check for sendas for user b.
on 30 Jul 2009 at 9:20 am24Chris

I am having an odd issue with how the FROM address is displayed. I am using Exchange 2003 and Outlook 2007. I have granted Send As permissions for User A to User B mailbox on the Security tab of the user object in AD (Send As is set to Allow, no other permissions are set to Allow or Deny).

If User A sends an email with User B in the FROM field to User C, User C sees User B in the FROM field on the received message. User A, however, sees User A on Behalf of User B in the FROM field when looking in Sent Items.

If I review the header on the message in User C’s inbox, the FROM address is User B.

There are no delegates listed in User B’s mailbox, nor are there any specific permissions set in Outlook on User B’s mailbox.

Everything appears to be correct except for how the FROM field is displayed in Outlook for User A. Can you offer any suggestions, or are you aware that this is a known “feature” (aka “bug”)?

Thanks, and great article!
on 31 Jul 2009 at 11:18 am25dustin

I am having the same problem as the guy above. this seems to be a recent problem, but i cannot seem to find any updates that wouldve caused it
on 26 Aug 2009 at 10:44 am26Cisco

We have an issue with Send on Behalf Of. We have users who have shared access to a a role-based e-mail account (departmental mailbox). When our users reply to messages sent to the role-based account using Send On Behalf of privileges, the email in the Sent items folder does not show that it was Sent on Behalf of but rather shows that it was sent from their own personal account.

However this works fine for new messages that are being composed. The problem only occurs for replies.

Any thoughts?
on 07 Sep 2009 at 7:12 pm27Américo Silva

Hi Chris,

Please look at this KB: http://support.microsoft.com/kb/973404/en-us

You need to install the last hotfix (August).

Américo Silva
on 18 Sep 2009 at 7:22 pm28John M

I have the opposite problem of everybody here. I have exchange 2007 running and office 2007 clients. I added send on behalf through the exchange 2007 console through mail flow settings but when I create an e-mail and put that mailbox in the from address from within my outlook it just looks like it is coming from that person and there it doesn't say sent on behalf of. This isn't an isolated incident as i have tried it on several mailboxes. Any ideas why it won't "sent on behalf of"
on 06 Nov 2009 at 4:39 pm29Roderick Day

this helped a lot! thanks!
on 06 Nov 2009 at 7:59 pm30Roderick Day

as an FYI:
this value is on your mailbox server (in a multi server ex2007 system)
this value may not yet be created, you can create is via this technet article: http://technet.microsoft.com/en-us/library/bb6848...
on 24 Nov 2009 at 2:35 pm31Phil

What about for calendar items? I need our admin assistant to send as for calendar items not send on behalf of. I cannot seem to find a way to add the "from" field on calendar
on 24 Nov 2009 at 3:31 pm32Lowland

Frenchie, i had the same issue as you discribe above, if solved it like this:

Open outlook with the mailbox that u want to share.
Then open from outlook the properties from the mailbox, and add your users/groups.

This solved my issue, i hope your too!!

Grtz
on 29 Jan 2010 at 6:29 pm33Matt

You are giving them the "Send As" permission instead of the "Send on Behalf As" permission
on 29 Jan 2010 at 10:32 pm34GLEN

"on behalf of" text not displaying in messages

I have several users (user A) that need to be able to send messages on behalf of another user (user B) and I want any recipients of these messages to see the message as coming from "user A on behalf of user B".

I have tried the obvious methods:
1) Giving User A send on behalf permissions in the delivery options box of the Exchange General tab of User B's account properties.
2) Enabling delegate access from User B's mailbox in Outlook.

No matter what I do the messages appear to come from User B and I cannot get the "on behalf of" text to display in these messages.

What am I doing wrong?
on 29 Jan 2010 at 10:36 pm35GLEN

Hi John,

Did you find a solution to this problem… I am getting the same issue. ("on behalf of" text not displaying in messages)

I have several users (user A) that need to be able to send messages on behalf of another user (user B) and I want any recipients of these messages to see the message as coming from "user A on behalf of user B".

I have tried the obvious methods:
1) Giving User A send on behalf permissions in the delivery options box of the Exchange General tab of User B's account properties.
2) Enabling delegate access from User B's mailbox in Outlook.

No matter what I do the messages appear to come from User B and I cannot get the "on behalf of" text to display in these messages.

What am I doing wrong?

Any feed back would be great!

thanks – glenharvey@hotmail.com
on 31 Jan 2010 at 11:57 pm36GLEN

Hi Matt,

I am giving the user "Send on Behalf" of permission both via Exchange2k7 and also using the Delegation methond using MS Outlook … any ides?
on 03 Feb 2010 at 9:35 am37krassimir

Can I view "send behalf on" attributes for a distribution group?
on 04 Feb 2010 at 6:30 pm38Elan Shudnow

Krassmir, you can just do a Get-DistributionGroup "Group Here" | FL GrantSendOnBehalfTo
on 08 Feb 2010 at 8:00 am39Peter

Am very new to this exchange stuff. I am trying to let one of my users do a "send as" or "on behalf of". The thing is that it is to a tottally different domain. So I would like first.name@domainname1.com to be able to send mails as info@domainname2.com Is this possible, is it very hard to do. I am running Exchange 2007 on SBS 2008

Any help greatly appreciated
on 08 Mar 2010 at 7:10 am40Exchange 2007: Send on Behalf and Send As — Apuntes de Sistemas

[...] Articulo en: http://www.shudnow.net/2007/08/12/send-on-behalf-and-send-as/ [...]
on 08 Apr 2010 at 11:30 pm41Confluence: RWTS Documentation

Microsoft Outlook Express Delegations , Send As…

Assigning Permissions # Start Active Directory Users and Computers; click Start, point to Programs, point to Administrative Tools, and then click Active Directory Users and Computers. # On the View menu, make sure that Advanced Features is selected…….
on 07 May 2010 at 9:03 am42Joe

Is there a way to have both?
on 14 May 2010 at 2:06 am43eshudnow

Not that I know of.
on 18 May 2010 at 9:03 pm44Phil Blanchard

Within Outlook connected to Exchange handling multiple domains, why can't we "send as" ("From") using any of the aliases (multiple domains) included in the AD user object???

Grrr -
on 08 Jul 2010 at 9:57 am45Jasper

Thanks, that solved the problem for me. Stupid that this can't be done from a hidden distlist. But still, it works now :)
on 08 Jul 2010 at 9:59 am46Jasper

I don't think that can be done. You'll have to make a seperate maibox for each domain and give send as to those mailboxes, I'm afraid…
on 14 Jul 2010 at 12:26 pm47Conrad Murray

Great article. Might be worth adding a section about where the actual Sent Item will reside and wwo to Audit who actually sent a mail when using SendAs
on 15 Jul 2010 at 4:16 pm48Dosdet

This seems to be a problem with systems that migrated from Exchange 2003 to Exchange 2007. I have fought with this problem for most of a year – working for some and not others and working then ceasing to work where it had before. Seems M$ finally addressed this in Exchange 2007-SP3. So far It is working properly now. Just FYI.
on 17 Jul 2010 at 11:00 pm49CListo

I have a very peculiar problem with this "send on behalf" thing.
a external sender sent an email on behalf an internal user to a second internal user.

the thing is that neither the internal ( described on the send on behalf) knows the external user.
Wierd….
Is like this:
From: John Smith (internal user 1) [mailto:Active directory OU address here] On Behalf Of Jane Doe.
Sent: DATE
To: Edward Smith (internal user 2)

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