454 authentication failed, please open SMTP flag first!

1. Error description

454 authentication failed, please open SMTP flag first! Exception in thread "main" Javax.mail.AuthenticationFailedExceptionat Javax.mail.Service.connect (service.java:267) At Javax.mail.Service.connect (service.java:137) at Com.you.mail.model.SendMessage.sendMessage (sendmessage.java:70 ) at Com.you.mail.model.SendMessage.main (sendmessage.java:89)

2. Cause of error

Today, I wrote a small instance of sending a message. At first, I used the 163 mailbox to test, and then the QQ mailbox test, 163 mailbox is opened SMTP service, and QQ mailbox is not opened, resulting in error

3. Solutions

(1) Open the QQ mailbox, opened the SMTP service;

(2) test with another mailbox (SMTP service enabled).

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

454 authentication failed, please open SMTP flag first!