Send Email node not working after upgrade to 4.6.0

[fedetoffano93]

Hello,

I have a workflow that uses the Send Email node to send an email from my Gmail account. It was working well until I upgraded to Knime 4.6.0.
Now I get the following error message:
javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate).
Do you know how to solve? Apart from potentially downgrading to previous version of Knime…

Thanks,
Fede

[diego_rod_lop]

Hey @fedetoffano93 ,

Some of us were experimenting the same issue as you mentioned.
I can suggest you a workaround to solve it that it works for me:

In the Send Email node configuration go to > (Mail Host (SMTP)) and use port 587/STARTTLS. See screenshot below

Lmk if it works also for you!

[fedetoffano93]

Awesome!!! It did solve!!!

[fedetoffano93]

To get a better understanding, why did it work?
My previous settings were port 465 and connection security SSL.

[ScottF]

We’re not exactly sure yet, although there has been some discussion internally about this. It seems to be a combination of the recent KNIME update including Java 17, and some changes made on Google’s side.