Hello friends, good day. First I want to clarify that I do not speak or write English. I speak and write Spanish. That’s why I’m using the google translator. Know apologize. My experience is with shared hosting, use of emails with Gmail, that is, I have no experience in the use of this type of systems. My problem is that I can not install the system. It is impossible to send the activation email. I detail the steps and actions that I have carried out: 1 - I contracted the Digital Ocean service with the Discourse application installed. 2 - Active domain. 3 - Mailgun configuration. Creating subdomains to handle email. Now I will try to explain step by step what I did: 1 - I get a Doplet in digitalocean with Ubuntu and discourse pre installed. 2 - The domain is configured with their respective dns provided by digitalocean. 3 - In mailgun I made the creation of the domain and two subdomains. In the Discourse installation I only use a single subdomain. 4 - Mailgun configuration was done with the dns in digitalocean. 5 - Each subdomain and domain is correctly active, according to mailgun. [Captura] 6 - According to the guide on github and the discourse installation: * Hostname for your Discourse? [discourse.example.com]: * ---- At this point can you place the root domain? * Email address for admin account (s)? [me @ example.com, you @ example.com]: * ----- In this section I put my email address, in this case gmail. SMTP server address? [smtp.example.com]: SMTP port? [587]: SMTP user name? [user@example.com]: SMTP password? [pa $$ word]: Let’s Encrypt account email? (ENTER to skip) [me@example.com]: ------ In these steps go the data provided by mailgun. This is the true one: DISCOURSE_HOSTNAME: ‘discourse.mecanicosargentinos.com’ DISCOURSE_DEVELOPER_EMAILS: ‘xxxxxxxxx@gmail.com’ DISCOURSE_SMTP_ADDRESS: smtp.mailgun.org # required DISCOURSE_SMTP_PORT: 587 # (optional, default 587) DISCOURSE_SMTP_USER_NAME: postmaster@discourse.mecanicosargentinos.com # required DISCOURSE_SMTP_PASSWORD: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx # required, WARNING the char ‘#’ in pw can cause problems! #DISCOURSE_SMTP_ENABLE_START_TLS: true # (optional, default true) Below is a subdomain log, keep in mind that the attempts are from Outlook. [Captura1] 7 - Following this guide: https://meta.discourse.org/t/troubleshooting-email-on-a-new-discourse-install/16326/2 If I write this command telnet smtp.mailgun.org 587 I get this result: [Captura2] There’s something I’m doing wrong. Can you help me? Thank you so much!!!

You might also try using port 2525. Digital ocean sometimes silently filters outgoing smtp traffic. I always often on port 2525.

@pfaffman You say open port 2525, it has nothing to do with port 587 where SMTP works? Sorry if it’s a very basic question.

Digital ocean sometimes filters outgoing smtp traffic.that method your server from being able to send spam (or any mail). Mailgun allows incoming mail to port 2525 to get around this. Change 587 to 2525 in your discourse settings.

SMTP PORT 587 works ok with mailgun, no need to change it.

It’s not mailgun that’s the issue. This server can’t connect to port 587 to any computer in the world. There could be some other problem, but I’m pretty sure this week fix it. A test would be to see if you can telnet to a Gmail smtp server and have it also time out.

There’s one of two problems here: mailgun is dropping your incoming connection attempts to their port 587 (we don’t know if they ever do this) Digital Ocean is dropping your outgoing connections to port 587 (we KNOW this happens) Given that we know that that (2) actually happens, it’s reasonable to assume it’s happening in this case and there are two ways to solve it: Contact Digital Ocean and ask them to remove the outbound port 587 block Switch to using port 2525 as @pfaffman suggests - Mailgun accepts mail on port 2525 for exactly this reason.

What is skip reason at /admin/email/skipped

Not 25, but 2525. @ankur he can’t even connect to the mailserver

Should this be working? Ehído the installation again and does not send anything. Will it be that I have to perform an installation from scratch? and not doing ./launcher Rebuild App [Captura4][Captura5]

Help, do not send the email

Product Support Self-hosting

ankur1857 (Ankur) March 8, 2018, 1:23pm 2

You have bounce rate 25% in your mailgun. It stops sending mail if bounce rate is above 5%. Contact mailgun support.

Topic		Replies	Views
Email doesn't work on Discourse Product Support email	9	297	June 18, 2025
Setup with digital ocean and SMTP Self-hosting unsupported-install	13	3684	December 20, 2018
SMTPAuthenticationError - I don't receive mail from mailgun to setup the admin account Self-hosting	12	1270	December 12, 2022
Issue with mail after install Self-hosting	5	1451	February 6, 2017
Email not working on my Discourse site Product Support	10	434	April 13, 2025

Help, do not send the email

Related topics