最近公司日常数据采集邮件忽然不能发邮件了，查了下log：

javax.mail.SendFailedException: Invalid Addresses;
  nested exception is:
	com.sun.mail.smtp.SMTPAddressFailedException: 550 Mailbox not found or access denied

	at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1835)
	at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1098)
	at javax.mail.Transport.send0(Transport.java:191)
	at javax.mail.Transport.send(Transport.java:120)
	at com.tHulianwang.util.SendMail.sendMailNoCC(SendMail.java:90)
	at umeng.UmengListening.afterTest(UmengListening.java:98)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:80)
	at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:564)
	at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:213)
	at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:138)
	at org.testng.TestRunner.afterRun(TestRunner.java:1021)
	at org.testng.TestRunner.run(TestRunner.java:621)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
	at org.testng.SuiteRunner.run(SuiteRunner.java:240)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1198)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1123)
	at org.testng.TestNG.run(TestNG.java:1031)
	at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:293)
	at org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:84)
	at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:91)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
Caused by: com.sun.mail.smtp.SMTPAddressFailedException: 550 Mailbox not found or access denied

	at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1686)
	... 30 more

原因是最近同事有人离职，邮箱被注销了，导致了上述报错，将该同事邮箱从收件人列表中删除后，邮件又能正常发送了。