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.

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HMOF

질문됨 2년 전1297회 조회

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이 답변이 도움이 되었나요?커뮤니티가 여러분의 지식을 활용할 수 있도록 정답을 찬성하세요.

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

답변함 2년 전

530 Authentication required

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