email - Caused by: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection? -

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i getting following error when setting email service spring boot while trying connect round cube:

caused by: javax.net.ssl.sslexception: unrecognized ssl message, plaintext connection?

this leads me think roundcude not using ssl connection , should not use port 143. therefore try , use port 25, following error when do.

caused by: javax.net.ssl.sslexception: unrecognized ssl message, plaintext connection?

application.properties

#email setup spring.mail.host = mail.email address.com spring.mail.username = email address spring.mail.password = password  spring.mail.properties.mail.smtp.auth= true spring.mail.port = 25 or port 145 spring.mail.properties.mail.smtp.socketfactory.class= javax.net.ssl.sslsocketfactory spring.mail.properties.mail.smtp.socketfactory.fallback= false spring.mail.properties.mail.smtp.ssl.enable = true

email service

@component public class emailserviceimpl implements emailservice {      @autowired     private javamailsender javamailsender;      @override     public void sendemail(string toaddress, string fromaddress,                           string subject, string body) {          simplemailmessage simplemailmessage = new simplemailmessage();          simplemailmessage.setfrom(fromaddress);         simplemailmessage.setto(toaddress);         simplemailmessage.setsubject(subject);         simplemailmessage.settext(body);          javamailsender.send(simplemailmessage);      } }

i looked @ roundcube's documentation , apparently uses port 143 rather confusing. making me think setting wrong.

i tried gmail since have 2 factor authentication ran more issue decided use roundcube rather use anyway.

advice?

it seems you're trying connect smtp using non-secure ports. secure ports 587 or 465.

this configuration works me send e-mail using gmail:

spring.mail.host=smtp.gmail.com spring.mail.port=587 spring.mail.username=my-email@gmail.com spring.mail.password=my-password spring.mail.properties.mail.smtp.auth = true spring.mail.properties.mail.smtp.starttls.enable = true spring.mail.properties.mail.smtp.socketfactory.class = javax.net.ssl.sslsocketfactory spring.mail.properties.mail.smtp.connectiontimeout = 60000 spring.mail.properties.mail.smtp.timeout = 60000

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