I’ve been self-hosting Discourse for many years, and had several instances happily configured and running on a fairly beefy machine. Today I noticed that one of my forums had gone down. The initial culprit looked to be lack of disk space, which I fixed. I then restarted the Discourse instance. How…

Yes that’s right, it’s the same problem … it started about two weeks ago.

Can you try both DISCOURSE_SMTP_ENABLE_START_TLS: false DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none ?

Are the first things I tried but still the same error SSL_connect returned=1 errno=0 state=error: certificate verify failed (Hostname mismatch)

[תמונה] Falco: DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none Hey, I tried it with both the options. It still doesn’t work: DISCOURSE_SMTP_ADDRESS: REDACTED DISCOURSE_SMTP_PORT: 25 DISCOURSE_SMTP_USER_NAME: REDACTED DISCOURSE_SMTP_PASSWORD: REDACTED DISCOURSE_SMTP_ENABLE_START_TLS: false…

For me it has been a blocking bug for a long time … I recommend you to create a new temporary email address that has SMTP TLS support.

Could this be related to this gem [תמונה] Install Discourse for development using Docker Developer Guides I met this problem too. And I fixed it by reverting this commit

I have the exact same problem. It started yesterday, when I upgraded (via rebuild) to 2.9.0.beta4 (a5779a7d0b). I made NO changes to app.yml, or anything else. Just a rebuild. I now have over 1,300 failed jobs. I’m seeing SSL errors in the logs (see below for screenshots), and I’m wondering if the…

I tried sending a message from inside the Discourse Docker container using curl. Once I made sure to specify plaintext SMTP and port 25, I can send email via the host just fine: $ cd /var/discourse/ $ sudo ./launcher enter app x86_64 arch detected. root@discourse-app:/var/www/discourse# curl smtp:/…

Bump, @pfaffman and/or @codinghorror . Do you think we may have a bug here, or something else?

@gunnar I moved your post here since this is the email issue you’re describing. I am not sure if the “post has already been taken” error is also being caused by this, but the details you gave about your email belong to this issue.

אי-התאמה בתעודת שם המארח של הדוא"ל גורמת לעומס יתר בתור ה-sidekiq וחוסר יציבות חמור באתר

תמיכה התקנה

pfaffman (Jay Pfaffman) 16 במאי,‏ 2022,‏ 12:14am 35

Could this be related to this gem

נושא		תגובות	צפיות
E-mail sending stopped working after upgrade Self-hosting	3	793	16 באוגוסט,‏ 2022
Email not working (SSL_connect returned=1) Self-hosting	16	2624	15 ביולי,‏ 2022
Discourse with other websites, SMTP issue: End of file reached Self-hosting	8	2389	22 באוקטובר,‏ 2020
Troubleshoot email on a new Discourse install Self-Hosting configuring , email , how-to	37	182359	27 באפריל,‏ 2026
Issues with Discourse 3.5.0.beta2-dev - SMTP and Background Jobs Bug email	16	423	6 במרץ,‏ 2025

אי-התאמה בתעודת שם המארח של הדוא"ל גורמת לעומס יתר בתור ה-sidekiq וחוסר יציבות חמור באתר

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