How to configure on-premises Exchange and Exclaimer

Resolution

To apply Server-Side signatures to emails sent from on-premises mailboxes, configure the Exchange On-Premises feature for Exclaimer.

Select an option below to view the related instructions:

Configuring the Exchange On-Premises feature for the first time

To access the Exchange On-Premises onboarding options:

You can access the Exchange On-Premises onboarding options in either of the following ways:

Option 1:

1. Navigate to:

   https://<region code>.signatures.exclaimer.net/configure/onboarding

2. Follow the steps on screen.

Option 2:

3. Submit a request with the Exclaimer Support team to enable you to access the legacy onboarding experience.
   
4. When you are granted access, log into your Exclaimer account and launch your subscription.
   
5. From the menu sidebar, select Connect.

Configuring Exchange On-Premises

To configure Exchange On-Premises when following Option 2:

To authorize Exclaimer to read user data from your on premise directory:

1. Select Connect.
   
2. Sign in to Microsoft 365 as a Global Administrator.
   
   
   _{Sign in to Microsoft 365 as a Global Administrator.}
   
3. Once signed in, you are prompted to accept a permissions request for the Exclaimer to read your Azure AD data. Select Accept.
   
   
   _{Accept the permissions request.}
   
   The Authorization Successful message is displayed.
   
4. Select Need to support Exchange On-Premise?
   
   
   _{Select Need to support Exchange On-Premise?}
   
5. From the Exchange On-Premises section, select Enable support.
6. Create an API key and copy the value of the key for use later on.
   
7. Download the Exclaimer Exchange Transport Agent.
   

8. Run the Exclaimer Exchange Transport Agent installation on every on-premises Exchange server with the Mailbox role in your environment.
   
   See the installation instructions for both Server Core and Desktop Experience versions of Windows Server:

   Install Exclaimer Exchange Transport Agent (on Windows Server Desktop Experience)

   Install Exclaimer Exchange Transport Agent (on Windows Server Core)