When adding attachments to messages. When trying to return the attachment amazon s3 return 400 with the following error.
Only one auth mechanism allowed; only the X-Amz-Algorithm query parameter, Signature query string parameter or the Authorization header should be specified
iConic21
commented
5 years ago 
When adding attachments to messages. When trying to return the attachment amazon s3 return 400 with the following error.
Only one auth mechanism allowed; only the X-Amz-Algorithm query parameter, Signature query string parameter or the Authorization header should be specified