Hello Discourse Support/Community, I have been struggling for several days to resolve an issue with outgoing emails from my Discourse instance. I am running Discourse in a Docker container on a Spaceship VPS (Phoenix, US). My mail provider is Spacemail (SMTP). Issue: Discourse cannot send email…

Can you confirm you followed the official install ?

Yes, I followed the official Discourse installation guide for Docker. If you need, I can provide details about my setup or any adjustments I had to make for my VPS environment.

Error log details: When attempting to send emails from Discourse, I consistently receive a timeout error in the job logs: Job exception: Net::ReadTimeout net-protocol-0.2.2/lib/net/protocol.rb:229:in `rbuf_fill' net-protocol-0.2.2/lib/net/protocol.rb:199:in `readuntil' net-protocol-0.2.2/lib/net/p…

I am not familiar at all with that vps. If you are right at the beginning of your setup you can try starting over with a new server rather than continuing to hit your head against the wall. Maybe try a different provider if that still doesn’t work.

I Tried: Zap-Hosting Ultra-Host And now spaceship, where i have all of DNS Records, domain, mailbox.

Yes, I did… Then I created the admin account via SSH command. After that, I saw the error: ‘Job exception: Net::ReadTimeout’

Summary of troubleshooting steps taken: Installed Discourse on a Spaceship VPS (Phoenix, US) using the official Docker install guide. Created the admin account via SSH command. Configured SMTP with Spacemail ( mail.spacemail.com , port 465, SSL, full email as username, correct password). R…

Try ports 587 or 2525 (try 587 first), do those work? 587 is the port mentioned in the install guide .

Thank you for your suggestion. My mailbox provider (Spacemail) officially supports only port 465 with SSL for SMTP. However, I have also tested port 587 with STARTTLS as part of troubleshooting (together with support), but the timeout issue still persists.

Spacemail에서 Discourse(VPS, Docker) 사용 시 지속되는 SMTP 타임아웃 문제

지원

tobiaseigen (Tobias Eigen) 9월 21, 2025, 6:27오후 7

Have you tried Troubleshoot email on a new Discourse install?

Sorry this has been such a struggle for you. Shouldn’t be so hard!

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Spacemail에서 Discourse(VPS, Docker) 사용 시 지속되는 SMTP 타임아웃 문제

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