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        <title>八百标兵奔北坡 - f.输出</title>
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        <title>1.电子邮件</title>
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        <description>电子邮件是自互联网诞生之初就已存在的服务,虽然每天各种垃圾邮件和钓鱼邮件层出不穷,屡禁不止,但我们仍然不能完全与它分开.

电子邮件协议

从计算机网络的课程中,我所了解到的电子邮件协议有这几种:</description>
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        <title>关键词输出</title>
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        <description>Email安全

说到Email安全,就要提到几个名词,SPF,DKIM和DMARC,它们都是进行送信ドメイン認証的,就是验证邮件的发送域是否是伪造的.

SPF: 送信側が宣言したドメインから送られてきたかどうかを、DNSサーバで公開されているIPアドレスを使って検証する。</description>
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        <title>know-how</title>
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        <description>先占一个坑.

亚马逊的出书服务:

&lt;https://kdp.amazon.com/en_US/&gt;</description>
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