# Outbound mail to blocked: Spamhaus “open resolver” return code – need help with YunoHost DNS/Rspamd setup

**URL:** https://forum.yunohost.org/t/outbound-mail-to-blocked-spamhaus-open-resolver-return-code-need-help-with-yunohost-dns-rspamd-setup/40469
**Category:** Support
**Tags:** english
**Created:** [October 18, 2025, 6:40am UTC](https://forum.yunohost.org/t/outbound-mail-to-blocked-spamhaus-open-resolver-return-code-need-help-with-yunohost-dns-rspamd-setup/40469 "2025-10-18T06:40:14Z")
**Posts on this page:** 1
**Showing post:** 29

<div class="post-metadata">

### Author: ![oberger](https://forum.yunohost.org/user_avatar/forum.yunohost.org/oberger/32/6081_2.png) [@oberger](https://forum.yunohost.org/u/oberger)
#### Post date: [October 20, 2025, 10:56am UTC](https://forum.yunohost.org/t/outbound-mail-to-blocked-spamhaus-open-resolver-return-code-need-help-with-yunohost-dns-rspamd-setup/40469/29 "2025-10-20T10:56:45Z")

</div>

Maybe the proper way to go would be to remove DNS4all entries in `/usr/share/yunohost/conf/dnsmasq/plain/resolv.dnsmasq.con`:

```auto
# diff -Naur /usr/share/yunohost/conf/dnsmasq/plain/resolv.dnsmasq.conf.orig /usr/share/yunohost/conf/dnsmasq/plain/resolv.dnsmasq.conf
--- /usr/share/yunohost/conf/dnsmasq/plain/resolv.dnsmasq.conf.orig	2025-10-20 12:50:12.089230400 +0200
+++ /usr/share/yunohost/conf/dnsmasq/plain/resolv.dnsmasq.conf	2025-10-20 12:50:20.657384672 +0200
@@ -24,6 +24,3 @@
 nameserver 2001:1608:10:25::1c04:b12f
 nameserver 84.200.70.40
 nameserver 2001:1608:10:25::9249:d69b
-# DNS4all
-nameserver 194.0.5.3
-nameserver 2001:678:8::3

```

and `yunohost tools regen-conf dnsmasq -f` ?

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_[View the full topic](https://forum.yunohost.org/t/outbound-mail-to-blocked-spamhaus-open-resolver-return-code-need-help-with-yunohost-dns-rspamd-setup/40469)._