69 lines
3.2 KiB
HTML
69 lines
3.2 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Enable insecure SMTP service on port 25</title>
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<link rel="stylesheet" type="text/css" href="./css/markdown.css" />
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</head>
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<body>
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<div id="navigation">
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<a href="/index.html" target="_blank">
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<img alt="iRedMail web site"
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src="./images/logo-iredmail.png"
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style="vertical-align: middle; height: 30px;"
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/>
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<span>iRedMail</span>
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</a>
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// <a href="./index.html">Document Index</a></div><div class="admonition note">
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<p class="admonition-title">This tutorial is available in other languages</p>
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<p><a href="./enable.insecure.smtp-it_IT.html">Italiano</a> /</p>
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</div>
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<h1 id="enable-insecure-smtp-service-on-port-25">Enable insecure SMTP service on port 25</h1>
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<p>Since iRedMail-0.9.5, SMTP auth on port 25 is disabled by default, all end
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users are forced to send email through port 587 (SMTP over TLS). If you need
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to allow insecure SMTP auth on port 25 for some reason, please follow steps
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below to enable it.</p>
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<div class="admonition note">
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<p class="admonition-title">Note</p>
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<p>If you have just few clients need to send email through port 25, e.g.
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network printer, old network devices which don't support secure
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connection, you may try another tutorial instead:
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<a href="./additional.smtp.port.html">Allow internal network devices to send email with insecure connection</a></p>
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</div>
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<ul>
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<li>Find comment out settings in Postfix config file <code>/etc/postfix/main.cf</code>
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(Linux/OpenBSD) or <code>/usr/local/etc/postfix/main.cf</code> (FreeBSD):</li>
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</ul>
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<pre><code>#
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# Enable SASL authentication on port 25 and force TLS-encrypted SASL authentication.
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# WARNING: NOT RECOMMENDED to enable smtp auth on port 25, all end users should
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# be forced to submit email through port 587 instead.
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#
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#smtpd_sasl_auth_enable = yes
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#smtpd_tls_auth_only = yes
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#smtpd_sasl_security_options = noanonymous
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#smtpd_tls_security_level = may
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</code></pre>
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<ul>
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<li>uncomment the last 4 lines:</li>
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</ul>
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<pre><code>smtpd_sasl_auth_enable = yes
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smtpd_tls_auth_only = yes
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smtpd_sasl_security_options = noanonymous
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smtpd_tls_security_level = may
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</code></pre>
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<ul>
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<li>Restart or reload Postfix service.</li>
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</ul>
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<p>That's all.</p><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. You can <a href="https://bitbucket.org/zhb/iredmail-docs/get/tip.tar.bz2">download the latest version</a> for offline reading. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
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</body></html> |