# Discourse/mail-receiver:release Docker image appears to be outdated **URL:** https://meta.discourse.org/t/discourse-mail-receiver-release-docker-image-appears-to-be-outdated/411734 **Category:** Bug **Tags:** mail-receiver **Created:** [September 6, 2026, 4:30am UTC](https://meta.discourse.org/t/discourse-mail-receiver-release-docker-image-appears-to-be-outdated/411734 "2026-09-06T04:30:12Z") **Posts on this page:** 1 **Showing post:** 1
### Author: ![scavin](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/scavin/32/115938_2.png) [@scavin](https://meta.discourse.org/u/scavin) #### Post date: [September 6, 2026, 4:30am UTC](https://meta.discourse.org/t/discourse-mail-receiver-release-docker-image-appears-to-be-outdated/411734/1 "2026-09-06T04:30:12Z")
Hi, I think the official `discourse/mail-receiver:release` Docker image may have been overlooked and has not been rebuilt for quite some time. The GitHub repository is still actively maintained: > **[GitHub - discourse/mail-receiver](https://github.com/discourse/mail-receiver)** > > 通过在 GitHub 上创建帐户来为 discourse/mail-receiver 开发做出贡献。 However, the official Docker image: ```plaintext discourse/mail-receiver:release ``` appears to have been built almost **2 years ago**. This seems to cause compatibility problems with current versions of Discourse. In my case, incoming email reaches the mail receiver successfully, but it is rejected during `RCPT TO` with: ```plaintext 450 4.7.1 Recipient address rejected: Internal error, API request failed ``` The old Docker image still appears to use the `smtp_should_reject` / fast-rejection mechanism. However, the current Discourse source contains this comment: ```ruby # this endpoint has been broken for years # and was used only in the public mail-receiver's fast rejection code, # which is removed in https://github.com/discourse/mail-receiver/pull/33 ``` PR #33 has already removed that fast-rejection code from `mail-receiver`, but those changes do not appear to be included in the currently published `discourse/mail-receiver:release` image. The official mail-receiver documentation/README still instructs users to use: ```plaintext discourse/mail-receiver:release ``` So I wonder if the Docker image publishing process was simply missed after the recent changes. Could you please check whether a new `discourse/mail-receiver:release` image needs to be built and published? Thanks! --- _[View the full topic](https://meta.discourse.org/t/discourse-mail-receiver-release-docker-image-appears-to-be-outdated/411734)._