InvalidSignatureException when sending via SES API – Works in Postman, fails in Plugin (Mautic 5.2.6, etailors AmazonSesBundle)

[mcgumbel]

I found the solution. I documented it directly at the plugins GitHub repository: InvalidSignatureException when sending via SES API – Works in Postman, fails in Plugin (Mautic 5.2.6) · Issue #73 · pm-pmaas/etailors_amazon_ses · GitHub