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# Connecting to Your SMTP Server

To ensure that Fusion users receive email notifications, configure the connection to your SMTP server. For example, if you do not use external authentication (such as LDAP or SAML), users will need notifications to help reset their forgotten passwords.

This section includes information for both On-premises and cloud deployments.

Note: AWS SES SMTP prerequisites: If you are deploying Fusion with AWS, complete these prerequisites before configuring SMTP for Fusion. AWS SES SMTP requires TLS to be enabled.

- For the AWS SES SMTP service, ensure that your private security group allows SMTP on the ports specified in AWS documentation.
  For more information, see Connecting to an Amazon SES SMTP endpoint.

- Review the list of AWS SMTP protocol endpoints. For more information, see Amazon SES.

- Download the Starfield Services Root CA from https://good.sca0a.amazontrust.com/.

- Make sure your Cloud administrator enables outbound traffic on your SMTP service ports.

To configure SMTP for Fusion:

1. Log in to the OMT Management Portal.

2. Click DEPLOYMENT, and select Deployments.

3. Select Reconfigure in the Three Dots menu and navigate to Fusion > User Management Configuration.

4. Configure SMTP:

   1. SMTP TLS Enable (Enable it for TLS, or disable it for non-TLS.)

   2. Add the certificate for the SMTP service.

   3. Add the SMTP host URL.

   4. Add the SMTP port number.

   5. Enter the SMTP Admin name.

   6. Enter the SMTP Admin password.

   7. Add the SMTP Admin email address.

   8. Click Save to activate the configuration changes.

      This will automatically restart application pods that offer email service.

If an installed certificate expires, its path changes or a fresh one is generated. When this happens, you must re-import it using the same process above.
If you connect to an SMTP server as an anonymous user or do not have a user name and password configured, you must add a dummy password and save.

Important: Message size constraints are applied according to the message size policy for your SMTP Service. Emailing report assets is one example that increases message size. If you encounter message limit or size warnings, or other errors, contact your SMTP administrator.

Example warning (AWS default):

AWS SES SMTP email attachments cannot exceed 10 MB. Contact your cloud administrator. See https://docs.aws.amazon.com/ses/latest/dg/quotas.html.

## Fusion ArcMC SMTP

To configure SMTP for Fusion ArcMC follow the steps in SMTP.