# Cannot receive emails. Senders get an error message related to spam

**URL:** https://forum.yunohost.org/t/cannot-receive-emails-senders-get-an-error-message-related-to-spam/40520
**Category:** Support
**Tags:** english
**Created:** [October 22, 2025, 8:35am UTC](https://forum.yunohost.org/t/cannot-receive-emails-senders-get-an-error-message-related-to-spam/40520 "2025-10-22T08:35:28Z")
**Posts on this page:** 1
**Showing post:** 5

<div class="post-metadata">

### Author: ![peer](https://forum.yunohost.org/letter_avatar_proxy/v4/letter/p/e9bcb4/32.png) [@peer](https://forum.yunohost.org/u/peer)
#### Post date: [October 22, 2025, 6:24pm UTC](https://forum.yunohost.org/t/cannot-receive-emails-senders-get-an-error-message-related-to-spam/40520/5 "2025-10-22T18:24:16Z")

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I was wrong, it is not fixed, it is happening again, the `cbl.abuseat.org`thing again. We cannot receive mail, external senders keep getting messages this one:

```auto
Error: Delivery status notification: failed – Hi!

This is the MAILER-DAEMON, please DO NOT REPLY to this email.

An error has occurred while attempting to deliver a message for
the following list of recipients:

peer@peerdomain.tld: 554 5.7.1 Service unavailable; Client host [193.34.69.156] blocked using cbl.abuseat.org; Error: open resolver; https://check.spamhaus.org/returnc/pub/2001...
```

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