Ubuntu中 mailx的安装与配置 → https://www.cnblogs.com/tuquanrong/p/9407705.html
使用465端口加密发邮件 → https://www.cnblogs.com/qiumingcheng/p/11521741.html
Please install an MTA on this system if you want to use sendmail! Can't send → https://www.baidu.com/s?wd=Please+install+an+MTA+on+this+system+if+you+want+to+use+sendmail!+Can%27t+send+mail%3A+sendmail+process+failed+with+error+code+255(百度搜索)
使用git send-email发送邮件时报错: Unable to initialize SMTP properly怎么处理?
→ https://www.cnblogs.com/dakewei/p/11008848.html
465端口邮件发送邮件 → https://www.baidu.com/s?wd=465%E7%AB%AF%E5%8F%A3%E9%82%AE%E4%BB%B6%E5%8F%91%E9%80%81%E9%82%AE%E4%BB%B6
certutil: function failed: SEC_ERROR_LEGACY_DATABASE: The certificate/key da → https://www.baidu.com/s?wd=certutil%3A+function+failed%3A+SEC_ERROR_LEGACY_DATABASE%3A+The+certificate%2Fkey+database+is+in+an+old%2C+unsupported+format.(百度搜索)
smime-certutil:功能失败:SEC_ERROR_LEGACY_DATABASE:证书/密钥数据库为旧的,不受支持的格式 → http://www.itgo.me/a/3602786511361299392/certutil-function-failed-sec-error-legacy-database-the-certificate-key-databa
Mailx安装与使用 → https://blog.csdn.net/yaoshixian/article/details/89531777
Please install an MTA on this system if you want to use sendmail! → https://www.baidu.com/s?wd=Please+install+an+MTA+on+this+system+if+you+want+to+use+sendmail!
Linux 命令详解(十二)Systemd 入门教程:使用定时器发送邮件(mail) → https://www.cnblogs.com/tinywan/p/8679159.html
使用465端口加密发邮件 → https://www.cnblogs.com/qiumingcheng/p/11521741.html
cannot open 465 → https://www.baidu.com/s?wd=cannot+open+465
ssmtp 配置 smtp.exmail.qq.com遇到Cannot open smtp.exmail.qq.com:465问题→https://blog.csdn.net/u013102743/article/details/81913653
"smtp.exmail.qq.com" port 465, isSSL false→ https://segmentfault.com/q/1010000004497746/a-1020000004501310
【Ubuntu】Ubuntu程序进程查看与关闭进程 → https://www.cnblogs.com/anno-ymy/p/10517512.html
Ubuntun的C盘 → https://www.baidu.com/s?wd=Ubuntun%E7%9A%84C%E7%9B%98
Ubuntun的C盘 → https://jingyan.baidu.com/article/39810a23bafcdab637fda64a.html
项目运行时保存文件到Ubuntun磁盘下 → https://www.baidu.com/s?wd=%E9%A1%B9%E7%9B%AE%E8%BF%90%E8%A1%8C%E6%97%B6%E4%BF%9D%E5%AD%98%E6%96%87%E4%BB%B6%E5%88%B0Ubuntun%E7%A3%81%E7%9B%98%E4%B8%8B(百度搜索)
UBUNTU命令-文件、磁盘管理 → https://www.cnblogs.com/ntos/articles/9557858.html
ubuntu18.04 首次登录mysql未设置密码或忘记密码解决方法 → https://blog.csdn.net/qq_38737992/article/details/81090373
org.springframework.jdbc.CannotGetJdbcConnectionException 解决办法 → https://blog.csdn.net/khxu666/article/details/79853948
jdbc.CannotGetJdbcConnectionException → https://www.baidu.com/s?wd=jdbc.CannotGetJdbcConnectionException(百度搜索)