一个roundcube的邮件系统，上传附件的时候提示上传附件失败。结合php nginx的结构，最大可能就是nginx的配置问题。查看nginx日志，看到错误日志类似如下：
2022/06/30 23:02:02 [error] 2050#0: *6896 client intended to send too large body: 13707422 bytes, client: 39.185.210.24, server: mail.szl724.com, request: \post /roundcube/?_task=mail&_remote=1&_from=compose&_id=22456968662be616b528a2&_uploadid=upload1656644522065&_action=upload http/1.1\, host: \mail.szl724.com\, referrer: \http://mail.szl724.com/roundcube/?_task=mail&_action=compose&_id=22456968662be616b528a2\2022/06/30 23:02:51 [notice] 2242#0: signal process started打开nginx配置文件/etc/nginx/nginx.conf
在http模块中增加配置
client_max_body_size 100m;修改后重新载入nginx