(lack of) smtp transport layer security
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原文摘录
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It appears that email messages from the platform are sent via plain SMTP even though the receiving MX supports ESMTPS (the use of ESMTP when STARTTLS is also successfully negotiated to provide a strong transport encryption layer).
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阅读 HackerOne 原文 ↗作者 @leander · 版权归作者与 HackerOne 所有