Hi, I’ve recently received this eMail from Amazon after previously (successfully) using PHP List with the “AWS_ACCESSKEYID/AWS_SECRETKEY/AWS_POSTURL” configuration parameters:
Amazon Simple Email Service (SES) had extended support for Signature Version 3 to February 28th, 2021. To continue to use Amazon SES, you must migrate to Signature Version 4 which offers enhanced security for authentication and authorization of Amazon SES customers. We have identified that, between 2021-03-22 and 2021-03-29, your AWS account [REDACTED] used Signature Version 3 to call Amazon SES APIs in the eu-west-1 Region. Your Signature Version 3 requests were identified to be originating from: - IAM Users: arn:aws:iam::[REDACTED]:user/[REDACTED] - IPs: [REDACTED] - User Agents: phpList (phpList version 3.5.2, https://www.phplist.com/) Your Signature Version 3 requests were identified to be using the following SES actions: - APIs: SendRawEmail Example Request ID using Signature Version 3: [REDACTED] You can identify API requests that use Signature Version 3 by looking at the request headers. Requests that use the Signature Version 3 resemble the following example (note the "AWS3"): X-Amzn-Authorization: AWS3-HTTPS AWSAccessKeyId=[REDACTED],Algorithm=HMACSHA256,Signature=[REDACTED] ... To move to Signature Version 4: - If you are self-signing your requests, refer to our documentation for Authenticating requests to the Amazon SES API  and creating a canonical request for Signature Version 4 . - If you are not self-signing your requests, simply update your SDK/CLI to the latest version. The Amazon SES team will update the request information weekly and will stop notifications once we identify that Signature Version 3 is no longer being used from your account.  https://docs.aws.amazon.com/ses/latest/DeveloperGuide/using-ses-api-authentication.html  https://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html Sincerely, Amazon Web Services
What does this eMail mean in my context, do I need to supply new values for the phpList config parameters from Amazon or is phpList’s SES functionality broken by this change?
Anything else I should know?