qxiong522 opened a new issue #5661:
URL: https://github.com/apache/dolphinscheduler/issues/5661
**Describe the question**
邮件告警发送失败
1. 以下配置：
```
MAIL_PROTOCOL=SMTP
MAIL_SERVER_HOST=smtp.163.com
MAIL_SERVER_PORT=25
[email protected]
[email protected]
MAIL_PASSWD=xxxxxx
MAIL_SMTP_STARTTLS_ENABLE=false
MAIL_SMTP_SSL_ENABLE=false
MAIL_SMTP_SSL_TRUST=
```
可以发送成功
如果 `MAIL_SMTP_STARTTLS_ENABLE=true` 失败
失败代码：
```
dolphinscheduler-alert_1 | org.apache.commons.mail.EmailException: Sending
the email to the following server failed : smtp.163.com:25
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.sendMimeMessage(Email.java:1469)
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.send(Email.java:1496)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.utils.MailUtils.getStringObjectMap(MailUtils.java:321)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.utils.MailUtils.sendMails(MailUtils.java:136)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.manager.EmailManager.send(EmailManager.java:39)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.plugin.EmailAlertPlugin.process(EmailAlertPlugin.java:101)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.runner.AlertSender.run(AlertSender.java:84)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.AlertServer.start(AlertServer.java:82)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.AlertServer.main(AlertServer.java:89)
dolphinscheduler-alert_1 | Caused by: javax.mail.MessagingException: Could
not convert socket to TLS
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:2155)
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:752)
dolphinscheduler-alert_1 | at
javax.mail.Service.connect(Service.java:388)
dolphinscheduler-alert_1 | at
javax.mail.Service.connect(Service.java:246)
dolphinscheduler-alert_1 | at
javax.mail.Service.connect(Service.java:195)
dolphinscheduler-alert_1 | at
javax.mail.Transport.send0(Transport.java:254)
dolphinscheduler-alert_1 | at
javax.mail.Transport.send(Transport.java:124)
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.sendMimeMessage(Email.java:1459)
dolphinscheduler-alert_1 | ... 8 common frames omitted
dolphinscheduler-alert_1 | Caused by: java.io.IOException: Server is not
trusted: smtp.163.com
dolphinscheduler-alert_1 | at
com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:638)
dolphinscheduler-alert_1 | at
com.sun.mail.util.SocketFetcher.startTLS(SocketFetcher.java:553)
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:2150)
dolphinscheduler-alert_1 | ... 15 common frames omitted
```
2. 更换以下配置
```
MAIL_PROTOCOL=SMTP
MAIL_SERVER_HOST=smtp.partner.outlook.cn
MAIL_SERVER_PORT=25 (587 也试了，错误一样)
[email protected]
[email protected]
MAIL_PASSWD=xxxxx
MAIL_SMTP_STARTTLS_ENABLE=false
MAIL_SMTP_SSL_ENABLE=false
MAIL_SMTP_SSL_TRUST=
```
发送失败
```
dolphinscheduler-alert_1 | org.apache.commons.mail.EmailException: Sending
the email to the following server failed : smtp.partner.outlook.cn:25
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.sendMimeMessage(Email.java:1469)
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.send(Email.java:1496)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.utils.MailUtils.getStringObjectMap(MailUtils.java:321)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.utils.MailUtils.sendMails(MailUtils.java:136)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.manager.EmailManager.send(EmailManager.java:39)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.plugin.EmailAlertPlugin.process(EmailAlertPlugin.java:101)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.runner.AlertSender.run(AlertSender.java:84)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.AlertServer.start(AlertServer.java:82)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.AlertServer.main(AlertServer.java:89)
dolphinscheduler-alert_1 | Caused by:
com.sun.mail.smtp.SMTPSendFailedException: 451 5.7.3 STARTTLS is required to
send mail [BJXPR01CA006.CHNPR01.prod.partner.outlook.cn]
dolphinscheduler-alert_1 |
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2358)
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1823)
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1300)
dolphinscheduler-alert_1 | at
javax.mail.Transport.send0(Transport.java:255)
dolphinscheduler-alert_1 | at
javax.mail.Transport.send(Transport.java:124)
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.sendMimeMessage(Email.java:1459)
dolphinscheduler-alert_1 | ... 8 common frames omitted
```
按照提示开启 tls `MAIL_SMTP_STARTTLS_ENABLE=true` 还是失败
失败原因：
```
dolphinscheduler-alert_1 | org.apache.commons.mail.EmailException: Sending
the email to the following server failed : smtp.partner.outlook.cn:25
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.sendMimeMessage(Email.java:1469)
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.send(Email.java:1496)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.utils.MailUtils.getStringObjectMap(MailUtils.java:321)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.utils.MailUtils.sendMails(MailUtils.java:136)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.manager.EmailManager.send(EmailManager.java:39)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.plugin.EmailAlertPlugin.process(EmailAlertPlugin.java:101)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.runner.AlertSender.run(AlertSender.java:84)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.AlertServer.start(AlertServer.java:82)
dolphinscheduler-alert_1 | at
org.apache.dolphinscheduler.alert.AlertServer.main(AlertServer.java:89)
dolphinscheduler-alert_1 | Caused by: javax.mail.MessagingException: Could
not convert socket to TLS
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:2155)
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:752)
dolphinscheduler-alert_1 | at
javax.mail.Service.connect(Service.java:388)
dolphinscheduler-alert_1 | at
javax.mail.Service.connect(Service.java:246)
dolphinscheduler-alert_1 | at
javax.mail.Service.connect(Service.java:195)
dolphinscheduler-alert_1 | at
javax.mail.Transport.send0(Transport.java:254)
dolphinscheduler-alert_1 | at
javax.mail.Transport.send(Transport.java:124)
dolphinscheduler-alert_1 | at
org.apache.commons.mail.Email.sendMimeMessage(Email.java:1459)
dolphinscheduler-alert_1 | ... 8 common frames omitted
dolphinscheduler-alert_1 | Caused by: java.io.IOException: Server is not
trusted: smtp.partner.outlook.cn
dolphinscheduler-alert_1 | at
com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:638)
dolphinscheduler-alert_1 | at
com.sun.mail.util.SocketFetcher.startTLS(SocketFetcher.java:553)
dolphinscheduler-alert_1 | at
com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:2150)
dolphinscheduler-alert_1 | ... 15 common frames omitted
```
然后换了个思路测试，用相同的 python 代码以上配置，发现可以发送成功，也就是说邮件服务那边设置是没问题的？
下面为 python 代码（不会 java，不好意思）
```
#!/usr/bin/python3
import os
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header
from email.mime.image import MIMEImage
def main():
# 1. 连接邮箱服务器
# 配置 1，正常发送
# con = smtplib.SMTP('smtp.partner.outlook.cn', 587)
# con.starttls()
# from_email = "[email protected]"
# from_email_pwd = 'xxxx'
# 配置 2，正常发送
con = smtplib.SMTP('smtp.163.com', 25)
con.starttls()
from_email = "[email protected]"
from_email_pwd = 'xxxxx'
con.login(from_email, from_email_pwd)
msg = MIMEMultipart()
subject = Header('找回密码', 'utf-8').encode()
msg['Subject'] = subject
msg['From'] = from_email
msg['To'] = '[email protected]'
text = MIMEText('忘记密码需要找回密码', 'plain', 'utf-8')
msg.attach(text)
con.sendmail(from_email, '[email protected]', msg.as_string())
con.quit()
if __name__ == '__main__':
main()
```
**Which version of DolphinScheduler:**
-版本：1.3.6
**Additional context**
env:
kubuntu 21.04 lts
docker
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