add auto fetch ssl certs
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@@ -13,7 +13,7 @@
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"articleSection" : "post",
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"name" : "[筆記] 測試mail server 的SSL憑證的指令 Command to test mailserver SSL",
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"headline" : "[筆記] 測試mail server 的SSL憑證的指令 Command to test mailserver SSL",
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"description" : "\x3cp\x3e今天老闆出國，發slack說手機不能寄信，看了一下，似乎是因為用GMAIL的APP來收信\x3c\/p\x3e\n\n\x3cp\x3e然後google 不知道跟人家改了什麼，結果不接受原本的認證了\x26hellip; WTF \x26hellip;.\x3c\/p\x3e\n\n\x3cp\x3e然後，這問題應該很久了，結果現在才在講 \x26hellip;.\x3c\/p\x3e",
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"description" : "\x3cp\x3e今天老闆出國，發slack說手機不能寄信，看了一下，似乎是因為用GMAIL的APP來收信\x3c\/p\x3e\n\x3cp\x3e然後google 不知道跟人家改了什麼，結果不接受原本的認證了\x26hellip; WTF \x26hellip;.\x3c\/p\x3e\n\x3cp\x3e然後，這問題應該很久了，結果現在才在講 \x26hellip;.\x3c\/p\x3e",
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"inLanguage" : "en",
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"author" : "Eric Chang",
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"creator" : "Eric Chang",
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@@ -24,7 +24,7 @@
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"datePublished": "2019-03-20 11:42:47 \x2b0800 CST",
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"dateModified" : "2019-03-20 11:42:47 \x2b0800 CST",
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"url" : "https:\/\/h.cowbay.org\/post\/command_to_test_main_ssl\/",
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"wordCount" : "665",
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"image" : "https://h.cowbay.orghttps://h.cowbay.org/images/post-default-10.jpg"",
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"keywords" : [ "Blog" ]
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}
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@@ -45,9 +45,9 @@
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@@ -81,10 +81,6 @@ if (!doNotTrack) {
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<a href="/categories/"></a>
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@@ -303,24 +299,14 @@ if (!doNotTrack) {
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<div class="entry-content">
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<article>
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<p>今天老闆出國，發slack說手機不能寄信，看了一下，似乎是因為用GMAIL的APP來收信</p>
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<p>然後google 不知道跟人家改了什麼，結果不接受原本的認證了… WTF ….</p>
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<p>然後，這問題應該很久了，結果現在才在講 ….</p>
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<p>底下都是用linux 主機來進行測試</p>
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<p>windows環境應該也可以，只是要自己去安裝 openssl 軟體</p>
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<p>To verify SSL, connect to any Linux server via SSH and use the instructions below:</p>
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<p><strong>測試 SSL-IMAP 993 port</strong></p>
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<pre><code>openssl s_client -showcerts -connect mail.example.com:993
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</code></pre>
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<p>結果應該會像是這樣</p>
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</code></pre><p>結果應該會像是這樣</p>
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<pre><code>2019-03-20 11:21:02 [changch@hqdc034 ~]$ openssl s_client -showcerts -connect mail.abc.com:993
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CONNECTED(00000003)
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depth=0 C = TW, ST = Taipei, L = Taipei, O = iredmail02.abc.com, OU = IT, CN = iredmail02.abc.com, emailAddress = root@iredmail02.abc.com
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@@ -401,16 +387,10 @@ SSL-Session:
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* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Dovecot (Ubuntu) ready.
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2019-03-20 11:21:47 [changch@hqdc034 ~]$
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</code></pre>
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<p><strong>測試SMTP TLS 587 port</strong></p>
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</code></pre><p><strong>測試SMTP TLS 587 port</strong></p>
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<pre><code>openssl s_client -starttls smtp -showcerts -connect mail.example.com:587
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</code></pre>
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<p>指令有點不同，要加上 startls smtp 的參數
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</code></pre><p>指令有點不同，要加上 startls smtp 的參數
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回應應該會是這樣</p>
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<pre><code>2019-03-20 11:50:48 [changch@hqdc034 ~]$ openssl s_client -starttls smtp -showcerts -connect mail.abc.com:587
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CONNECTED(00000003)
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depth=1 C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
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@@ -510,14 +490,10 @@ SSL-Session:
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---
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250 DSN
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</code></pre>
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<p><strong>測試 SMTP SSL port 465</strong>
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指令
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<pre>
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openssl s_client -showcerts -connect mail.example.com:465
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</pre></p>
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</code></pre><p><strong>測試 SMTP SSL port 465</strong>
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指令</p>
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<!-- raw HTML omitted -->
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<!-- raw HTML omitted -->
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<p>不過因為我沒開這個port ，所以就不測試了</p>
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</article>
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</div>
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@@ -790,7 +766,7 @@ title="pinterest icon"></i>
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</ul> <div class="design-credit">
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<p>© 2018 Göran Svensson</p>
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<p>© 2018 Göran Svensson</p>
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<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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@@ -802,7 +778,7 @@ title="pinterest icon"></i>
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