Enforcing SSL protocols between Platform JEMAIL and SMTP server

[dcrossey]

Hey all,

If you are using the bundled java email engine in KX Platform to send emails to an (SMTP) relay server using TLS, and you've recently upgraded/or the SMTP has been upgraded, and you've seen an error where the TLS connection cannot be established (after working previously), such as:

You will need to add a new parameter to your DS_JEMAIL_SERVER config to explicitly set the SSL protocol that is accepted by your SMTP relay server.

For example:

mail.smtp.ssl.protocols Specifies the SSL protocols that will be enabled for SSL connections

mail.smtp.ssl.protocols=TLSv1.2

Note - I've redacted the from / host / trust addresses.

After updating your configuration, remember to bounce your java email process to pick up the new configuration:

You should see a similar message to this on your jemail process log after restarting:

Now we can establish the TLS connection and send emails out 📬

Sample email API call:

.email.send[`to`subject`body!(`$"YOURNAME@DOMAIN.COM";"Test email";"This is a test email")]

Further reading here:

• Email engine - KX Platform
• com.sun.mail.smtp (JavaMail API documentation) (javaee.github.io)

Best regards,

David

[User]

Oh yes, this looks like the solution for a problem I have been facing this week. We even lodged a bug yesterday via the support system. I will try it tomorrow morning 😄
Cheers,
Adriano

[dcrossey]

I hope it helps solve your issue adrianosm_ 🙏🏻

[User]

It solved our issue. 😄
Now we are able to send emails using KX 4.6.1P3 + Java 8
cheers

[cmulvaney · Accepted solution]

Solved an ongoing issue we have had for months, brilliant!

[dcrossey]

Thanks for letting me know, I'm glad this post helped you Ciarán! 😊

[gbrennan]

Really Helpful! Thanks!