如果邮件发送失败,可能配置SES通知到SNS。bounce分为两种:
hard bounce
soft bounce
。参考 https://repost.aws/zh-Hans/knowledge-center/ses-bounce-notifications-sns
确定导致退回率增加的原因,可以查看 Amazon SNS 退回通知或事件数据中的 bounceType 和 diagnosticCode 字段。参考退回类型
https://repost.aws/zh-Hans/knowledge-center/ses-high-bounce-rate
https://repost.aws/zh-Hans/knowledge-center/ses-bounce-notifications-sns