我在业务服务器上部署了apache james和java邮件应用程序。它在一周内运行良好，但今天，用户抱怨他们不能再收到新邮件了。我重新启动服务器（计算机）并解决了所有问题。
我不知道发生了什么，我怀疑它是詹姆斯的配置，因为它在日志中提供了很多异常：
SpoolManager中-2012-08-06-11-36.log
06/08/12 11:36:28 INFO spoolmanager: Run JamesSpoolManager: Spool Thread #9
06/08/12 11:36:28 INFO spoolmanager: Spool=$Proxy5
06/08/12 11:36:28 INFO spoolmanager: Spool=$Proxy5
06/08/12 13:56:48 ERROR spoolmanager.transport: Exception calling LocalDelivery:
Exception spooling message: Exception caught while storing mail Container:
javax.mail.MessagingException: Exception spooling message: Exception caught while storing mail Container: ;
nested exception is:
javax.mail.MessagingException: Exception caught while storing mail Container: ;
nested exception is:
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12519, TNS:no appropriate service handler found
The Connection descriptor used by the client was: 127.0.0.1:1521:spmmis
配置文件如下： config.xml