SES has started to reject some of my outbound emails with the error: 530 Authentication required ``` This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: host email-smtp.us-east-1.amazonaws.com [18.210.31.252] SMTP error from remote mail server after MAIL FROM:: 530 Authentication required ``` Other emails still go through fine though. I have only one set of SES credentials and they have not changed. This looks like an issue at AWS.

530 Authentication required

SES has started to reject some of my outbound emails with the error: 530 Authentication required

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  <user@recipient>
    host email-smtp.us-east-1.amazonaws.com [18.210.31.252]
    SMTP error from remote mail server after MAIL FROM:<me@myco.com>:
    530 Authentication required

Other emails still go through fine though. I have only one set of SES credentials and they have not changed. This looks like an issue at AWS.

トピック: フロントエンド Web & モバイルビジネスアプリケーション
タグ: Amazon Simple Email Service
言語: English

HMOF

質問済み 4年前2129ビュー

1回答

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これらの回答は役に立ちましたか？コミュニティがあなたの知識を活用できるように、正解に賛成票を投じてください。

The problem is that TLS negotiation is timing out, so my server tried to send the email without authenticating itself. I forced my server to require TLS for email-smtp.us-east-1.amazonaws.com so that it won't try to send the email unauthenticated.

But the TLS shouldn't be timing out, this looks like an issue at AWS.

HMOF

回答済み 4年前

530 Authentication required

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