116 lines
5.8 KiB
HTML
116 lines
5.8 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>Change mail attachment size</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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<ul>
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<li><a href="./change.mail.attachment.size-zh_CN.html">简体中文</a></li>
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</ul>
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</div>
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<h1 id="change-mail-attachment-size">Change mail attachment size</h1>
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<div class="toc">
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<ul>
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<li><a href="#change-mail-attachment-size">Change mail attachment size</a><ul>
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<li><a href="#change-message-size-limit-in-postfix">Change message size limit in postfix</a></li>
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<li><a href="#change-upload-file-size-in-roundcube-webmail">Change upload file size in Roundcube webmail</a><ul>
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<li><a href="#change-php-setting-to-allow-to-upload-large-attachment">Change PHP setting to allow to upload large attachment</a></li>
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<li><a href="#change-roundcube-webmail-settings-to-allow-large-attachment">Change Roundcube webmail settings to allow large attachment</a></li>
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</ul>
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</li>
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<li><a href="#change-upload-file-size-in-nginx">Change upload file size in Nginx</a></li>
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</ul>
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</li>
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</ul>
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</div>
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<p>To change mail attachment size, we have to change 3 settings.</p>
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<h2 id="change-message-size-limit-in-postfix">Change message size limit in postfix</h2>
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<p>Postfix is MTA, so we have to change its setting to transfer mail with large
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attachment.</p>
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<p>For example, to allow mail with 100Mb attachment, please change both
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<code>message_size_limit</code> and <code>mailbox_size_limit</code> settings like below:</p>
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<pre><code># postconf -e message_size_limit='104857600'
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# postconf -e mailbox_size_limit='104857600'
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</code></pre>
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<p>Restart postfix to make it work:</p>
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<pre><code># /etc/init.d/postfix restart
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</code></pre>
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<p><strong>NOTES</strong>:</p>
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<ul>
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<li><code>104857600</code> is 100 (MB) x 1024 (KB) x 1024 (Bit).</li>
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<li>Mail will be encoded by mail user agent (Outlook, Thunderbird, etc) before
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transferred, the actual message size will be larger than 100MB, you can
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simplily increase above setting to 110Mb or 120Mb to make it work as expected.</li>
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<li>If <code>mailbox_size_limit</code> is smaller than <code>message_size_limit</code>, you will get
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error message in Postfix log file like this: <code>fatal: main.cf configuration
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error: mailbox_size_limit is smaller than message_size_limit</code>.</li>
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</ul>
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<p>If you use mail clients such as Outlook, thunderbird to send mails, it's now
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ok to sent large attachment with above setting.</p>
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<h2 id="change-upload-file-size-in-roundcube-webmail">Change upload file size in Roundcube webmail</h2>
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<p>If you have Roundcube webmail, please change two more settings:</p>
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<h3 id="change-php-setting-to-allow-to-upload-large-attachment">Change PHP setting to allow to upload large attachment</h3>
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<p>You should change <code>memory_limit</code>, <code>upload_max_filesize</code> and <code>post_max_size</code> in
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PHP config file <code>/etc/php.ini</code></p>
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<ul>
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<li>on RHEL/CentOS: it's <code>/etc/php.ini</code></li>
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<li>on Debian/Ubuntu, it's <code>/etc/php5/apache2/php.ini</code></li>
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<li>on FreeBSD, it's <code>/usr/local/etc/php.ini</code> for Apache, or
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<code>/etc/php5/fpm/php.ini</code> for Nginx.</li>
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<li>on OpenBSD, it's <code>/etc/php-5.4.ini</code>. If you're running different PHP release,
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the version number <code>5.4</code> will be different.</li>
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</ul>
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<pre><code>memory_limit = 200M;
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upload_max_filesize = 100M;
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post_max_size = 100M;
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</code></pre>
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<h3 id="change-roundcube-webmail-settings-to-allow-large-attachment">Change Roundcube webmail settings to allow large attachment</h3>
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<p>Change same settings in file <code>.htaccess</code> under roundcube root directory:</p>
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<ul>
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<li>on RHEL/CentOS, it's <code>/var/www/roundcubemail/.htaccess</code></li>
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<li>on Debian/Ubuntu, it's <code>/usr/share/apache2/roundcubemail/.htaccess</code> or
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<code>/opt/www/roundcubemail/.htaccess</code>.</li>
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<li>on FreeBSD, it's <code>/usr/local/www/roundcubemail/.htaccess</code></li>
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<li>on OpenBSD, it's <code>/var/www/roundcubemail/.htaccess</code></li>
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</ul>
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<p>Note: this <code>.htaccess</code> file may not exist on some Linux/BSD distributions,
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if it doesn't exist, you can skip this step.</p>
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<pre><code>php_value memory_limit 200M
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php_value upload_max_filesize 100M
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php_value post_max_size 100M
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</code></pre>
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<p>Restart Apache or php-fpm service to make it work.</p>
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<h2 id="change-upload-file-size-in-nginx">Change upload file size in Nginx</h2>
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<p>Find setting <code>client_max_body_size</code> in Nginx config file
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<code>/etc/nginx/nginx.conf</code>, change it to a proper value to match your need.</p>
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<p>```
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http {
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...
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client_max_body_size 100m;
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...
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}</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. 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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