Hello,

You are receiving this email because you are an Amazon Redshift customer. Your action is required by October 23rd, 2017 to ensure continued connectivity to your Redshift cluster.

Beginning on this date, clients connecting to Amazon Redshift clusters will need an additional trusted certificate authority (CA). Clients use trusted certificate authorities to confirm the identity of the Redshift cluster when they connect to it. Your action is required to update your SQL clients and applications to use an updated certificate bundle that includes the new trusted CA.

* How do I update clients and applications to use an updated certificate bundle?

Go to the Transitioning to ACM Certificates for SSL Connections documentation page at https://docs.aws.amazon.com/redshift/latest/mgmt/connecting-transitioning-to-acm-certs.html to download a new trusted certificate bundle, and then follow the steps on that page to configure your SQL clients to use the new bundle. The steps are specific to your application or SQL client configuration. The certificate bundle contains both old and new certificate authorities, so you can upgrade your application safely and maintain connectivity during the transition period.

To maintain connectivity, you'll need to install the new certificate bundle before October 23rd, 2017 at 17:00:00 UTC. After you've configured your clients to use the new bundle, you're done.

* What if I have questions or issues?

If you have questions or issues, please contact AWS Support at https://aws.amazon.com/support or your Technical Account Manager (TAM).

Sincerely, Amazon Web Services