Hi there. I have a discourse forum up and running and yesterday I tried to configure reply_by_email. I found that even without enabling this feature (reply by email enabled setting) but only entering a reply by email address I broke regular email sending (notifications about new replies, activati…

Well, after a lot of trials and errors I found a solution for my problem: not to use %{reply_key} in reply by email address. When I used email like forum-reply+%{reply_key}@domain.tld emails were not sent at all, and there were no any logs about that. So I’m confusing, why is a suggestion of addin…

Hi, Matt. It means that no emails are sent at all. Neither activation emails for new users, nor notifications about topic updated to active users.

Check the email debugging document. I’d guess that the reply to address you added is not one that your mail delivery service accepts.

Because if you want the reply to go to the right topic that it’s in reply to, that key is necessary. What mail delivery service are you using? It’s odd that it would not deliver mail with a +XXX address. It’s not Discourse’s fault that your mail transfer agent silently throws away mail if it doesn…

Well, I checked email sources and found that even without %{reply_key} there were headers like these: From: ForumN <forum@forum.tld> Reply-To: Discoursesds <forum-reply@forum.tld> To: user@ya.ru Message-ID: <topic/13/26@forum.tld> In-Reply-To: <topic/13@forum.tld> References: <topic/13@forum.tld> S…

Configuring reply_by_email breaks regular email sending

Support

mpalmer (Matt Palmer) June 16, 2017, 5:15am 2

The first step in investigation is to understand the problem. What does “broke” mean, exactly?

Topic		Replies	Views
Reply by email address broken Bug	7	1198	November 18, 2022
Issue configuring reply by email: 553 5.7.1 Sender address rejected: not owned by user Support	6	12896	June 13, 2019
Notifications incompatibles avec le reply by email Support	7	235	February 25, 2026
Reply by email not working (but I'm able to verify each component is working as it should...) Support	0	524	January 28, 2021
How %{reply_key} create? Support	6	2473	August 16, 2018

Configuring reply_by_email breaks regular email sending

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