| update: if i delete the chars in Project from in Email ext domain, this problem will be solved; I passed mail settings by sending test email with same mail account、password、port and so on. In a specific job, i used Editable Mail Notification and used the account info that have passed the mail settings by sending test email. The error info is below: Checking for pre-build Executing pre-build step Checking if email needs to be generated No emails were triggered. [test] $ cmd /c call C:\Windows\TEMP\jenkins1452792326576924061.bat C:\Jenkins\workspace\test>echo "success!" "success!" C:\Jenkins\workspace\test>exit 0 Checking for post-build Performing post-build step Checking if email needs to be generated Email was triggered for: Always Sending email for trigger: Always messageContentType = text/plain; charset=UTF-8 Adding recipients from project recipient list Adding recipients from trigger recipient list Successfully created MimeMessage Sending email to: ****@163.com Error sending to the following VALID addresses: *****@163.com SendFailedException message: 550 Invalid User Finished: SUCCESS |