ioan 45 Posted January 13, 2021 I got an email from AWS today that my services send emails using 'Signature Version 2' which is deprecated and will be gone by the end of March. Only 'Signature Version 4' will be supported after that (https://docs.aws.amazon.com/general/latest/gr/signature-version-4.html). Right now I'm using TIdSMTP to send emails using SES. How do I change TIdSMTP to use sigv4? Share this post Link to post