AWS SES issue/bug related to Non-ASCII Text email headers
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We are seeing an issue with sending DKIM-signed messages via SES, specifically message we send via SES has non-ASCII characters and according to https://datatracker.ietf.org/doc/html/rfc2047#section-4.1 there are two options for encoding non-ASCII characters: B (base64) or Q (quoted) encoding.
The issue that we are seeing is when we send B encoded headers SES changes them to Q encoded headers which breaks our DKIM signature that we apply to the message before passing it to SES.
Could someone from AWS please take a look at this and comment ? This issue is really impacting since SES makes changes to headers so it breaks DKIM.