==== 必填信息。没有填写将不予回复 ====
- iRedMail 版本号：0.9.6
- 使用哪个数据库存储用户帐号（OpenLDAP，MySQL，PostgreSQL）：mysql
- 使用的 Linux/BSD 发行版名称及版本号：centos-release-7-0.1406.el7.centos.2.3.x86_64
- 与您的问题相关的日志信息：
====
张老板好，
出现了以下问题，请问如何解决，谢谢！

2017/05/25 15:28:40 [error] 10289#0: *309 FastCGI sent in stderr: "PHP message: ERROR: Invalid response code received from server (451)" while reading response header from upstream, client: 192.168.20.37, server: _, request: "POST /mail/?_task=mail&_unlock=loading1495697302913&_lang=en&_framed=1 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.socket:", host: "192.168.20.34", referrer: "https://192.168.20.34/mail/?_task=mail& … 6879e41f19"
2017/05/25 15:28:40 [error] 10289#0: *306 FastCGI sent in stderr: "PHP message: ==rcube_imap=host=127.0.0.1===user===1@ctsat.com==pass===123qwe===port===143==ssl==
PHP message: ==rcube_imap=host=connected=1" while reading response header from upstream, client: 192.168.20.37, server: _, request: "GET /mail/?_task=mail&_action=composesuccess HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.socket:", host: "192.168.20.34", referrer: "https://192.168.20.34/mail/?_task=mail& … ;_framed=1"
2017/05/25 15:28:41 [error] 10289#0: *306 FastCGI sent in stderr: "PHP message: ===get_folder==333333=1111
PHP message: ==rcube_imap=host=127.0.0.1===user===1@ctsat.com==pass===123qwe===port===143==ssl==
PHP message: ==rcube_imap=host=connected=1
PHP message: PHP Warning:  Illegal offset type in isset or empty in /var/www/roundcubemail-1.2.0/program/lib/Roundcube/rcube.php on line 656
PHP message: ===save_folder====outpurt=====" while reading response header from upstream, client: 192.168.20.37, server: _, request: "POST /mail/?_task=mail&_action=get_folderlist HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.socket:", host: "192.168.20.34", referrer: "https://192.168.20.34/mail/?_task=mail& … osesuccess"