Email Experience Manager

Configuring EXM in a scaled environment


Configure EXM to work in a scaled environment.

If you are working with Sitecore in a scaled environment, you must configure the Email Experience Manager (EXM) to work within this environment.

A scaled environment usually consists of one content management (CM) server and one or more content delivery (CD) servers. You can configure servers for a specific purpose (for example, content management, content delivery, or processing) using a rule-based configuration.

In the standard multiserver Sitecore environment, all content management and content delivery instances share the Core and Web databases and all the CM instances share the Master database. This means that the same connection strings to the databases must be used in the configuration file of each server.

The following diagram illustrates the connections between the servers and the content databases in a standard multiserver Sitecore setup:


Email campaigns are dispatched from each dedicated dispatch server (DDS) and, optionally, from the primary CM. 

This topic outlines how to:

To configure a content management server:

  1. Install Sitecore Experience Platform and configure it according to the Sitecore scaling recommendations for content management servers.

  2. On the primary content management server, in the \App_Config\ConnectionStrings.config file:

    • Add the EXM.DedicatedDispatchService connection string, for example:

    <add name="EXM.DedicatedDispatchService" connectionString="/sitecore%20modules/web/exm/dedicateddispatchservice.asmx" />
  3. On all the content management servers in your scaled environment, in the \App_Config\ConnectionStrings.config file, add the EXM.InternalApiKey connection string, for example:

    <add name="EXM.InternalApiKey" connectionString="0x0000000000000000000000000000000000000000000000000000000000000000" />


    The InternalAPIKey is used internally by EXM to validate requests to DDS servers.


    The connection string must be a 64-character hexadecimal. The connection string value above is just an example and should not be used.

In a scaled setup, any HTML files that you want to use as templates for your email campaigns must be manually copied to the Website\layouts\EmailCampaign\Imported folder on all the CM servers and dedicated dispatch servers that you have configured to dispatch email campaigns.

To configure a content delivery server:

  1. Install Sitecore Experience Platform and configure it according to the Sitecore scaling recommendations for content delivery servers.


    In the Sitecore.Analytics.Tracking.config file, ensure that the value of the Analytics.ClusterName setting is the hostname of the content delivery server. This is required for a scaled environment to avoid contacts being locked when running EXM. If there is more than one content delivery server in your environment, use the same value for each server.

    In addition, make sure that the content management server can reach the content delivery server through HTTP using the hostname that you have specified in the Analytics.ClusterName setting of the content delivery server.

  2. In the \App_Config\ConnectionStrings.config file, add the following connection strings:

    • EXM.CryptographicKey and EXM.AuthenticationKey.

      Each key must be a hexadecimal 64-character string (with symbols 0-9 and A-F) and must be the same across all servers. The CryptographicKey and AuthenticationKey are used to encrypt/decrypt data. For example:

    <add name="EXM.CryptographicKey" connectionString=
    "E040C938FC9E4EBC3E93330B0F7837F284207B8180DB64CB5B6ABEB1AFBF6F5B" />
    <add name="EXM.AuthenticationKey" connectionString=
    "9D80B4E56AEE694058567BD89C936FB88F2DB1272A4E88F419B6501919E0BB25" /> 


    For security reasons, do not use the example key provided above.