关于邮件无法发送的问题

[Allwayz]

我在测试的时候是可以发出去邮件的，可是在实际调用中却出现了拒绝链接 的bug

2020-02-19 20:28:53.132 ERROR 1832 --- [nio-8990-exec-3] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is io.github.biezhi.ome.SendMailException: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1;
  nested exception is:
	java.net.ConnectException: Connection refused (Connection refused)] with root cause

java.net.ConnectException: Connection refused (Connection refused)

是不是因为配置读不到而不能把send方法写成工具类去别的地方调用？