You have Send-As permissions that allow you to send messages to another user from a shared mailbox. Although a signature is added to the outgoing email, but when you view the sent message in the Sent Items folder, you notice the signature is not present on the email.
Exclaimer uses a Sent Items Update feature to store sent messages (in your Sent Items folder) exactly as they were received, that is, showing the message and the appropriate signature that was applied (after the signature/mail disclaimer policies were applied).
The Sent Items Update feature can be configured to:
- Only store sent items with signatures applied
- Store the original messages AND a copy of those messages with signatures applied
No information about the sender is passed along with the sent message when using the Send As option; this means that Exclaimer cannot identify who's Sent Items folder the message has been saved to, so the message cannot be updated using Sent Items Update.
To resolve this issue, you can change the mailbox to which items sent from a shared mailbox are saved.
To change the settings and place sent items in the associated Sent-As mailbox, you can follow any one of the options described below:
To update the Windows registry:
- Launch the RegEdit (Registry Editor).
- Browse to the following registry subkey:
HKey_Current_User > Software > Microsoft > Office > x.0 > Outlook > PreferencesWhere, x.0 represents your Office version (example: 16.0 is Office 2016, 15.0 is Office 2013, 14.0 is Office 2010).
- From the Edit menu, select New then select DWORD (32-bit) Value.
- Enter the DWORD name as DelegateSentItemsStyle and press [Enter].
To edit the value, you can either right-click the DelegateSentItemsStyle and select Modify or double-click DelegateSentItemsStyle.
The Edit DWORD (32-bit) Value window is displayed.
- In the Value data box, type 1.
- Click OK to save the changes and close the window.
- Restart Outlook for the change to take effect.
You can configure the mailbox only on the following:
- Exchange 2010 Service Pack (SP) 3 and above
- Exchange 2013 Cumulative Update (CU) 9 and above
- Exchange 2016
To configure the mailbox, you need to:
Run the commands
See below for more information on how you can:
Install the Exchange Online PowerShell module
Connect to Exchange Online
Office 365 Global Administrator credentials
To run the commands:
- For Exchange 2010 SP3 and above, open Exchange Management Shell, then run this command:
Set-MailboxSentItemsConfiguration <mailbox id> -SendAsItemsCopiedTo SenderAndFrom
- For Exchange 2013 CU9 and above, Exchange 2016, Exchange 2019, open Exchange Management Shell, then run this command:
set-mailbox <mailbox id> -MessageCopyForSentAsEnabled $True
For more information, see Prepare Active Directory and domains for Exchange Server.
To Install the Exchange Online PowerShell V2 module:
Open the Windows PowerShell and run this command as an Administrator:
Install-Module -Name ExchangeOnlineManagement
Confirm that you want to install this PowerShell module.Note: For additional installation options, see ExchangeOnlineManagement.
To connect to Exchange Online:
- If you have Multi-Factor Authentication enabled, run this command:
Connect-ExchangeOnline -UserPrincipalName <UPN> -ShowProgress $true
In <UPN>, enter your username.
- If you don't have Multi-Factor Authentication enabled, run this command:
Connect-ExchangeOnline -Credential $UserCredential -ShowProgress $true
When prompted, enter your password (and the Multi-Factor Authentication verification code if required).