I installed discourse behind nginx according this post. Also I have SSL certificate installed by certboot Registration activation email is not sending and when I run ./discourse-doctor on email sending step I get Net::ReadTimeout However, everything is OK with curl. I send message on the same port (465) and receive message. My settings are: - "templates/web.socketed.template.yml" DISCOURSE_SMTP_ADDRESS: smtp.yandex.ru DISCOURSE_SMTP_PORT: 465 DISCOURSE_SMTP_USER_NAME: _name_ DISCOURSE_SMTP_PASSWORD: _pass_ DISCOURSE_SMTP_ENABLE_START_TLS: true

No success. Got this ======================================== ERROR ======================================== Connection to port 2525 failed. ====================================== SOLUTION ======================================= The most likely problem is that your server has outgoing SMTP traffic blocked. If you are using a service like Mailgun or Sendgrid, try using port 2525. update: curl also fails on 2525

Are you on DigitalOcean? They are known to block outbound mail ports on new servers, particularly on new accounts. Reach out to them to get it unblocked if so, but use 587 if possible! 465 was revoked by the IETF years ago.

Not DigitalOcean. I use other Ubuntu VPS and Yandex as smtp server. Curl fails on 25, 2525 and 587 ports, but works on 465

Either way sounds like your provider is blocking you. Definitely worth reaching out to get the restriction removed.

I am able to connect to smtp server via telnet on ports 25, 587 and 465. So, I don’t think someone blocks ports.

The Question is why am I getting ReadTimeout with Discourse while with curl I can successfully send message (on 465 port)

Try from inside the container. ./launcher enter app You may have docker blocked from getting outside.

Or whichever host is conducting traffic inspection, which would explain why it works until you wrap it in TLS.

Tried from within docker. Successfully sent with curl root@server-app:/var/www/discourse# curl --url 'smtps://smtp.yandex.ru:465' --ssl-reqd \ --mail-from '...' --mail-rcpt '...' \ --upload-file mail1.txt --user 'login:pass' % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 167 0 0 100 167 0 166 0:00:01 0:00:01 --:--:-- 167 root@server-app:/var/www/discourse#

Not able to send email Net::ReadTimeout

Product Support Self-hosting

webmayak (Alex Kostin) March 3, 2019, 2:36pm 13

@acinonyxjubatus did you find a solution? I have the same problem with smtp.yandex.ru on DigitalOcean one-click Discourse app..

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Not able to send email Net::ReadTimeout

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