blocks|key|4268687|text|将maildir更改为您的系统使用的任何内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4268688|将Dovecot+mail_location设置更改为|4268689|mail_location+=+maildir:~/Mail|offset|length|style|CODE|4268690|将后缀home_mailbox设置更改为|4268691|home_mailbox+=+Mail/|4268692|重启服务，即可轻松完成|4268693|取自此fedoraforum+post|4268694|entityMap|0|LINK|mutability|MUTABLE|url|http://forums.fedoraforum.org/showpost.php?p=1550832&postcount=4^0|0|0|0|U|0|0|0|K|0|0|3|G|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|11|8|@$F|12|G|13|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|14|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|15|8|@$F|16|G|17|H|I]]|9|@]|A|$]]|$1|N|3|O|5|6|7|18|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|19|8|@]|9|@$F|1A|G|1B|1|1C]]|A|$]]|$1|R|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|S|$T|$5|U|V|W|A|$X|Y]]]]

Change the maildir to whatever your system uses.

Change Dovecot mail_location setting to

<code>mail_location = maildir:~/Mail</code>

Change Postfix home_mailbox setting to

<code>home_mailbox = Mail/</code>

Restart services and away you go 
Taken from this <a href="http://forums.fedoraforum.org/showpost.php?p=1550832&amp;postcount=4" rel="nofollow noreferrer">fedoraforum post</a>

blocks|key|5686090|text|问题出在邮件服务器上。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5686091|检查邮件服务器中的端口并重置端口(如有必要)：|5686092|必须为SMTP打开|5686093|端口25+(和587)必须为IMAP打开|unordered-list-item|5686094|端口143+(和993)必须为POP3|5686095|打开|5686096|端口110|5686097|5686098|还要在防火墙设置中打开这些端口。|5686099|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|H|7|X|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|Z|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|10|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|11|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|S|$]]

The issue is in your mail server.

Check your ports in your mail server and reset it (if necessary):

<ul>
<li>Port 25 (and 587) must be open for SMTP</li>
<li>Port 143 (and 993) must be open for IMAP</li>
<li>Port 110 must be open for POP3</li>
</ul>

Also open those ports in your firewall settings.

blocks|key|1698623|text|sudo+dovecot应该可以解决这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1698624|如果没有，重启dovecot|1698625|sudo+service+dovecot+restart|code-block|syntax|javascript|1698626|entityMap^0|0|C|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

<code>sudo dovecot</code> should solve the problem.

If not restart dovecot

<pre><code>sudo service dovecot restart
</code></pre>

blocks|key|5686144|text|我在letsencrypt证书上遇到了同样的问题，并通过禁用对等身份验证来解决它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5686145|$config['imap_conn_options']+=+array(
++++'ssl'+=>+array('verify_peer'+=>+true,+'verfify_peer_name'+=>+false),
++++'tls'+=>+array('verify_peer'+=>+true,+'verfify_peer_name'+=>+false),
);|code-block|syntax|javascript|5686146|然后，您可以像这样设置连接字符串(starttls)：|5686147|$config['default_host']+=+'tls://your-host.tld';
$config['default_port']+=+'143';
$config['smtp_server']+=+'tls://your-host.tld';
$config['smtp_port']+=+'25';|5686148|或者像这样(ssl方法)：|5686149|$config['default_host']+=+'ssl://your-host.tld';
$config['default_port']+=+'993';
$config['smtp_server']+=+'ssl://your-host.tld';
$config['smtp_port']+=+'587';|5686150|确保在连接字符串中使用证书的完全限定主机名(如-host.tld)，而不是内部主机名(如localhost)。|5686151|希望这对其他人有帮助。|5686152|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

I had the same problem with a letsencrypt certificate and resolve it by disabling peer authentication:

<pre><code>$config['imap_conn_options'] = array(
 'ssl' =&gt; array('verify_peer' =&gt; true, 'verfify_peer_name' =&gt; false),
 'tls' =&gt; array('verify_peer' =&gt; true, 'verfify_peer_name' =&gt; false),
);
</code></pre>

Afterwards you can set the connection string like this (starttls):

<pre><code>$config['default_host'] = 'tls://your-host.tld';
$config['default_port'] = '143';
$config['smtp_server'] = 'tls://your-host.tld';
$config['smtp_port'] = '25';
</code></pre>

Or like this (ssl approach):

<pre><code>$config['default_host'] = 'ssl://your-host.tld';
$config['default_port'] = '993';
$config['smtp_server'] = 'ssl://your-host.tld';
$config['smtp_port'] = '587';
</code></pre>

Make sure you use the fully qualified hostname of the certificate in the connection string (like your-host.tld) and not an internal hostname (like localhost).

Hope that helps someone else.

blocks|key|5686171|text|如果您运行fail2ban，则dovecot可能会在失败的Roundcube登录尝试后被禁止。这在我身上已经发生过两次了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5686172|首先，检查是否真的是这样：|5686173|sudo+fail2ban-client+status+dovecot|5686174|如果您得到类似以下内容的输出：|5686175|Status+for+the+jail:+dovecot
%7C-+Filter
%7C++%7C-+Currently+failed:+1
%7C++%7C-+Total+failed:+8
%7C++`-+File+list:++++/var/log/mail.log
`-+Actions
+++%7C-+Currently+banned:+1
+++%7C-+Total+banned:+2
+++`-+Banned+IP+list:+++X.X.X.X|code-block|syntax|javascript|5686176|也就是说，Currently+banned数字高于0，那么fail2ban有点过于急切，你必须“解禁”dovecot。|5686177|以交互模式运行fail2ban客户端：|5686178|sudo+fail2ban-client+-i|5686179|在fail2ban>提示符下输入以下内容：|5686180|set+dovecot+unbanip+X.X.X.X|5686181|其中X.X.X.X是您的Dovecot服务器的IP地址。|5686182|退出交互式客户端并再次运行sudo+fail2ban-client+status+dovecot。Currently+banned:字段现在的值应为0。更重要的是，RoundCube应该再次工作:-)|5686183|entityMap^0|5|8|F|7|0|0|0|Z|0|0|0|5|G|T|8|1F|7|0|7|8|0|0|N|0|1|9|0|0|R|0|2|7|0|D|Z|1D|H|0^^$0|@$1|2|3|4|5|6|7|16|8|@$9|17|A|18|B|C]|$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1B|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|1C|8|@$9|1D|A|1E|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|1F|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|1G|8|@]|D|@]|E|$O|P]]|$1|Q|3|R|5|6|7|1H|8|@$9|1I|A|1J|B|C]|$9|1K|A|1L|B|C]|$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|S|3|T|5|6|7|1O|8|@$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|U|3|V|5|6|7|1R|8|@$9|1S|A|1T|B|C]]|D|@]|E|$]]|$1|W|3|X|5|6|7|1U|8|@$9|1V|A|1W|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|1X|8|@$9|1Y|A|1Z|B|C]]|D|@]|E|$]]|$1|10|3|11|5|6|7|20|8|@$9|21|A|22|B|C]]|D|@]|E|$]]|$1|12|3|13|5|6|7|23|8|@$9|24|A|25|B|C]|$9|26|A|27|B|C]]|D|@]|E|$]]|$1|14|3|-4|5|6|7|28|8|@]|D|@]|E|$]]]|15|$]]

If you run <code>fail2ban</code>, then <code>dovecot</code> might get banned following failed Roundcube login attempts. This has happened to me twice already...
First, check if this is indeed the case:
<code>sudo fail2ban-client status dovecot</code>
If you get an output similar to this:
<pre><code>Status for the jail: dovecot
|- Filter
| |- Currently failed: 1
| |- Total failed: 8
| `- File list: /var/log/mail.log
`- Actions
 |- Currently banned: 1
 |- Total banned: 2
 `- Banned IP list: X.X.X.X
</code></pre>
i.e. the <code>Currently banned</code> number is higher than 0, then <code>fail2ban</code> was a bit overeager and you have to &quot;unban&quot; <code>dovecot</code>.
Run the <code>fail2ban</code> client in interactive mode:
<code>sudo fail2ban-client -i</code>
and at the <code>fail2ban&gt;</code> prompt enter the following:
<code>set dovecot unbanip X.X.X.X</code>
where <code>X.X.X.X</code> is the IP address of your Dovecot server.
Exit from the interactive client and run <code>sudo fail2ban-client status dovecot</code> again. The <code>Currently banned:</code> field now should have a value of 0. What's more important, RoundCube should work again :-)

I'm trying to login to Roundcube only the program won't let me.

<img src="https://i.stack.imgur.com/qfKFB.png" alt="roundcube login">

I can login to the said account from the shell and mail is setup and working correctly on my server for user 'admin'. It's RC that is the problem. If I check my logs:

<pre><code>/usr/local/www/roundcube/logs/errors
</code></pre>

they show:

<pre><code>[21-Sep-2013 17:19:02 +0100]: IMAP Error: Login failed for admin from ip.ip.ip.ip. Could not connect to ip.ip.ip.ip:143: 
Connection refused in /usr/local/www/roundcube/program/lib/Roundcube/rcube_imap.php on line 184 
(POST /roundcube/?_task=login&amp;_action=login)
</code></pre>

which doesn't give me many clues really, just leads me to:

<pre><code>public function connect($host, $user, $pass, $port=143, $use_ssl=null) {}
</code></pre>

from 

<pre><code>rcube_imap.php
</code></pre>

Stuff I've tried, editing: 

<pre><code>/usr/local/www/roundcube/config/main.inc.php
</code></pre>

with:

<pre><code>// IMAP AUTH type (DIGEST-MD5, CRAM-MD5, LOGIN, PLAIN or null to use
// best server supported one)
//$rcmail_config['imap_auth_type'] = LOGIN; 
$rcmail_config['imap_auth_type'] = null;

// Log IMAP conversation to &lt;log_dir&gt;/imap or to syslog
$rcmail_config['imap_debug'] = /var/log/imap;
</code></pre>

With a failed login attempt

<pre><code>/var/log/imap
</code></pre>

doesn't even get written to, leaving me no clues. I'm using dovecot and Sendmail on a FreeBSD box with full root access. It's not an incorrect username password combination for sure. 

Several Googles on the string 'Roundcube: Connection to storage server failed' are fruitless.

EDIT:

I needed an entry in 

<pre><code>/etc/rc.conf

dovecot_enable="YES"
</code></pre>

Schoolboy error.

IMAP Error: Login failed - Roundcube

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试登录Roundcube，但程序不允许。​​我可以登录到上述帐户从外壳和邮件设置，并在我的服务器上为用户'admin‘正常工作。RC才是问题所在。如果我检查我的日志：/usr/local/www/roundcube/logs/errors它们显示：[21-Sep-2013 17:19:02 +0100]: IM...

问IMAP错误:登录失败- Roundcube
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