grails : Could not connect to SMTP host: *********, port: 25

Question

Can anyone help me with this, I was unable to send email from my app and experiencing below errors.

Logs:

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)

Here is my grails config:

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

Build COnfig:

compile ":mail:1.0.7"

Hoping for your generous help.

Thanks

Answer 1

The error message also points to an SSL connection. Seems like you are trying to connect to an SSL port using standard SMTP TCP. Here is a Stack Over flow that has a similar error message.

unrecognized ssl message plaintext connection exception

Answer 2

Make sure you use correct SSL port number. By default SSL/TLS encrypted SMTP uses port 465.