grails：無法連接到SMTP主機：*********，端口：25

Question

任何人都可以幫助我，我無法從我的應用程序發送電子郵件，並遇到以下錯誤。

日誌：

Could not connect to SMTP host: ****.******.** port: 25; 

nested exception is: 

javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?. Failed messages: javax.mail.MessagingException: Could not connect to SMTP host: smtp.webbfontaine.ci, port: 25; 
    nested exception is: 

javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?; message exception details (1) are: 
Failed message 1: 
javax.mail.MessagingException: 
Could not connect to SMTP host: ****.******.**, port: 25; 
    nested exception is: 


javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection? 

at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1986) 

at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:656) 

at javax.mail.Service.connect(Service.java:345) 

at org.springframework.mail.javamail.JavaMailSenderImpl.connectTransport(JavaMailSenderImpl.java:486) 

at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:406) 

at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:345) 

at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:340) 

這裏是我的Grails的配置：

grails{ 
     mail { 
      disabled = false 
      host = "*****.****.**" 
      port = 25 
      username = "account" 
      password="" 
      props = ["mail.smtp.auth":"false", 
        "mail.smtp.socketFactory.port":"25"] 
     } 
    } 

構建配置：

compile ":mail:1.0.7" 

盼望您的慷慨幫助。

謝謝

Answer 1

錯誤消息也指向SSL連接。似乎您正嘗試使用標準SMTP TCP連接到SSL端口。這是一個Stack Over flow，它有一個類似的錯誤信息。

unrecognized ssl message plaintext connection exception

Answer 2

確保你使用正確的SSL端口號。默認情況下，SSL/TLS加密的SMTP使用端口465.