Recently updated to the latest version and suddenly email notifications are no longer working. Sidekiq has the following error: obs::HandledExceptionWrapper: Wrapped OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=error: dh key too small but I can’t seem to find much info on it that is at all useful. My my configs are just the basic: DISCOURSE_SMTP_ADDRESS: DISCOURSE_SMTP_PORT: 587 DISCOURSE_SMTP_USER_NAME: DISCOURSE_SMTP_PASSWORD: ' ' DISCOURSE_SMTP_ENABLE_START_TLS: true # (optional, default true) (Urls redacted for privacy, its all just standard stuff though)

I guess my questions are… A) Why is this problem something that didn’t exist before but does now, and how do i find out what that problem is. and b) Why does that problem only affect smtp and not the site as a whole? My SSL certificates are valid until april 2020, and https is working fine on the site as a whole… Is there any method to troubleshoot why discourse suddenly doesn’t like my ssl certificates for smtp?

The problem is this: [image] bmgraves: dh key too small The SMTP you are using provides a DH key that is too small. Are you using your own SMTP server? If so, you are in good company. Rackspace had the same problem up until recently. Email SSL Errors after Update to 2.4.0.beta4 - #11 by gerhard contains instructions on how to debug the issue and a temporary workaround. But you or your provider should really increase the size of the DH key.

Email Notifications Failing after Update

Product Support Self-hosting

codinghorror (Jeff Atwood) October 30, 2019, 8:35pm 2

There is a problem with your https certificates.

Topic		Replies	Views
E-mail sending stopped working after upgrade Self-hosting	2	890	May 29, 2022
Emails stopped working, failing after upgrade Self-hosting	1	646	May 19, 2022
Email SSL Errors after Update to 2.4.0.beta4 Self-hosting email	15	3148	October 28, 2019
Emails not working after upgrade: certificate verify failed Self-hosting	1	1326	May 13, 2022
E-mail sending not working after upgrade Product Support	9	2845	October 1, 2019

Email Notifications Failing after Update

Related topics