Guys, I’ve tried all you have previously suggested but definitely I cannot succeed with that. Log says that the hostname does not match the server certificate. Any bit of help? Thanks for your time, it’s bit frustrating. Cheers!

[תמונה]Troubleshoot email on a new Discourse install Log says that the hostname does not match the server certificate. Any bit of help? Fix the server certificate so it matches the hostname. Without knowing which certificate, and which hostname, and how all this came to be, it’s a bit hard to be more helpful than that.

Thanks Matt (@mpalmer) The complete message from the log is that one: Sent mail to info@blockchainers.cat (329.6ms) Job exception: hostname "smtp.blockchainers.cat" does not match the server certificate And the app.yml file contains as bellow: ## TODO: The domain name this Discourse instance will respond to DISCOURSE_HOSTNAME: discourse.blockchainers.cat ## Uncomment if you want the container to be started with the same ## hostname (-h option) as specified above (default "$hostname-$config") #DOCKER_USE_HOSTNAME: true ## TODO: List of comma delimited emails that will be made admin and developer ## on initial signup example 'user1@example.com,user2@example.com' DISCOURSE_DEVELOPER_EMAILS: 'info@blockchainers.cat' ## TODO: The SMTP mail server used to validate new accounts and send notifications DISCOURSE_SMTP_ADDRESS: smtp.blockchainers.cat DISCOURSE_SMTP_PORT: 578 DISCOURSE_SMTP_USER_NAME: info@blockchainers.cat DISCOURSE_SMTP_PASSWORD: password-here #DISCOURSE_SMTP_ENABLE_START_TLS: true # (optional, default true) ## If you added the Lets Encrypt template, uncomment below to get a free SSL certificate #LETSENCRYPT_ACCOUNT_EMAIL: me@example.com ## The CDN address for this Discourse instance (configured to pull) ## see https://meta.discourse.org/t/14857 for details #DISCOURSE_CDN_URL: //discourse-cdn.example.com I’ve already tried with port 25, 578 and 587. Also modified SiteSetting.notification_email with rails command. No succeed. Telnet seems to repond well: root@BLOCKCHAINERS:/var/discourse# telnet smtp.blockchainers.cat 578 Trying 46.16.61.50... Connected to smtp.blockchainers.cat. Escape character is '^]'. 220 fnsib-smtp07.srv.cat ESMTP ^] telnet> Appart from that, my domain nameserver (CDMON) says that my A register should pint to digitalocean virtual server IP, but my NS should be left empty. It’s a bit confusing to me since Droplet Networking section in digital ocean says I should edit both A and NS registers (please find screenshot attached). . Am I misunderstanding that? [תמונה] So, I’m running out of ideas to sort it out. Do you have any clue on what is happening or if I’m doing some error with app.yml configuration? By now I can enter the domain and start with Discourse wizard, but no welcome email is entering to my mailbox. Thanks for all. Cheers.

[תמונה]Troubleshoot email on a new Discourse install Job exception: hostname “smtp.blockchainers.cat” does not match the server certificate … DISCOURSE_SMTP_ADDRESS: smtp.blockchainers.cat That resolves to a single IP address for me (46.16.61.50) and the server there has a certificate for srv.cat and *.srv.cat, not for anything blockchainers. That’s why you are getting the error. On SMTP connection, the banner identifies the machine as fnsib-smtp07.srv.cat, but DNS lookups of that name don’t return that IP address (although it does return six others near by). (BTW, I checked the cert with https://ssl-tools.net/mailservers in case other people want to test their servers.) I think you need to get the *.srv.cat name for that mail server.

Thanks @elijah How can solve that then? My domain nameserver provider says I should not change NS registars, just the A registar. Is that related with your suggestion? What if I uncomment this line? Should that solve the problem? ## If you added the Lets Encrypt template, uncomment below to get a free SSL certificate #LETSENCRYPT_ACCOUNT_EMAIL: me@example.com Cheers.

You should ask whoever you can what DNS name to use for the mail server so that it will agree with the name in the certificate. It’s not your DNS that is at fault, it is the DNS of the mail server.

geting same error … plz help what to do instaled on centos7 with plesk

also getting the same error any help please

The main server is misconfigured. It’s not a Discourse problem. You should contact whoever runs your mail server and ask them for help.

Hi. Still having this problem… SMTP connection is successful, but then Sending mail failed. hostname "protolife.com" does not match the server certificate standard ssl checkers (e.g. this one) report that host protolife.com has a certificate, and is properly listed in it. Is this contradicting the error message? It would help to know where the hostname xxx does not match the server certificate error message is generated. By discourse? By the SMTP server (and passed on by discourse.doctor)? thanks in advance…

Set DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none

Hostname does not match server certificate

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jmobile (Jephthah Okpukoro) 4 בפברואר,‏ 2022,‏ 3:47am 16

Please, I am currently facing the same problem. How did you manage to resolve the issue with this?

I debugged a reverse DNS problem, and things are working now

What steps did you take?

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Hostname does not match server certificate

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