java 使用qq邮箱发送邮件报错 port: 465, response: 550 错误

悠悠 2023-07-05 14:45 7阅读 0赞

项目中使用到qq邮箱进行批量发送邮件的经常会报如下的错误：

javax.mail.MessagingException: Could not connect to SMTP host: smtp.qq.com, port: 465, response: 550
    	at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1960)
    	at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:642)
    	at javax.mail.Service.connect(Service.java:295)
    	at javax.mail.Service.connect(Service.java:176)

或者这样的错误：

com.sun.mail.smtp.SMTPSendFailedException: 550 Mail content denied. 
    http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=20022&&no=1000726

或者：

javax.mail.MessagingException: Could not connect to SMTP host: smtp.qq.com, port: 465, response: -1

大多是因为一段时间内发送邮件太频繁，导致被qq邮箱服务器拒绝连接了，使用定时任务或者多线程同时发送多封邮件经常会遇到这个问题  
可尝试以下连接的解决方案：  
https://blog.csdn.net/baidu\_34211956/article/details/83544631  
或者等待一段时间后再发送  
腾讯官方帮助文档解释如下：  
https://service.mail.qq.com/cgi-bin/help?subtype=1&&id=20022&&no=1000722  
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https://service.mail.qq.com/cgi-bin/help?subtype=1&&id=20022&&no=1000726  
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