I have discourse installed on VPS I have directadmin installed on a different managed VPS running exim smtp In discourse I used SMTP server details on the directadmin VPS I checked emails with isnotspam.com Sending email using thunderbird with directadmin SMTP Result: pass ID(s) verified: [header.From=discourse@example.com](mailto: header.From=discourse@example.com) Selector=x domain=example.com DomainKeys DNS Record=x._domainkey.example.com BUT if I send it out using discourse the result passes, but no selector Result: pass ID(s) verified: [header.From=discourse@example.com](mailto :header.From=discourse@example.com) Selector= domain= DomainKeys DNS Record=._domainkey. Any ideas?

Which component are you expecting to be doing the DKIM signing?

My SMTP server should. However when emails are sent from discourse it’s not getting signed the same. I’m wondering if it has to do with the helo forum.example.com

[image] Thommie Rother: Discourse acts as an smtp client Yes correct. So the different signing results when checked with isnotspam was confusing me. Anyway , I re ran the test today and now it passes – ---------------------------------------------------------- DKIM check details: ---------------------------------------------------------- Result: pass ID(s) verified: header.From=discourse@example.com Selector=x domain=example.com DomainKeys DNS Record=x._domainkey.example.com Not sure what happened, but I did have to update my DNS txt key inside cloudflare, as well as update the rDNS for the mail server. Maybe it just required time for everything to propagate or clear some cache?

[image] o o: Anyway , I re ran the test today and now it passes In the previous test: Result: pass ID(s) verified: [header.From=discourse@example.com](mailto :header.From=discourse@example.com) Selector= domain= DomainKeys DNS Record=._domainkey. there was no DKIM record, so it wasn’t signed. [image] o o: Maybe it just required time for everything to propagate or clear some cache? DNS doesn’t propagate, remember. Regardless, now the mail is signed so you should be good?

Yep its signs on checking, so something needed cache updating

Emails not getting signed by DKIM when sent using discourse

Product Support Self-hosting

Thomas_Rother (Thommie Rother) May 5, 2024, 6:41am 4

You gave the answer yourself Discourse acts as an smtp client and the dkim signing must be provided by the smtp server receiving the mails from Discourse.

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Emails not getting signed by DKIM when sent using discourse

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