Java Mail发送邮件时出现异常？

[cxmvip]

当我发送EMAIL时，有时会出现relay异常，但是本机的Outlook或FoxMail都可以发送。

javax.mail.SendFailedException: Sending failed;
nested exception is:
class javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
class javax.mail.SendFailedException: 550 5.7.1 Unable to relay for [e-mail]
at javax.mail.Transport.send0(Transport.java:218) at javax.mail.Transport.send(Transport.java:80) at com.uniproud.fax.mail.SendMailImpl.postMail(SendMailImpl.java:126) at com.uniproud.fax.mail.SendMailImpl.sendMail(SendMailImpl.java:46) at com.uniproud.fax.mail.SendMailManager.task(SendMailManager.java:80) at com.uniproud.fax.mail.WatchThread.run(WatchThread.java:48)

[zhushizu]

关注中.....

[cxmvip]

哈哈，今天更怪了，我的测试类竟然可以发送

[stonecsdn]

smtp没有数错吗

[cxmvip]

没有的，我在类的测试类中是可以用的，在其它类中是不可以用的，而且以前也可以用过，欲哭无泪