diff --git a/dockers/sympa/Dockerfile b/dockers/sympa/Dockerfile
index 4485cbd..732c8aa 100644
--- a/dockers/sympa/Dockerfile
+++ b/dockers/sympa/Dockerfile
@@ -99,7 +99,7 @@ RUN echo "root: ADMIN_EMAIL" >> /etc/aliases \
 RUN echo aliases_program postalias >>/etc/sympa/sympa/sympa.conf \
     && echo sendmail /usr/sbin/sendmail >>/etc/sympa/sympa/sympa.conf \
     && echo soap_url /sympasoap >>/etc/sympa/sympa/sympa.conf \
-    && echo dmarc_protection.mode dmarc_reject >>/etc/sympa/sympa/sympa.conf \
+    && echo dmarc_protection.mode dmarc_reject,dmarc_quarantine >>/etc/sympa/sympa/sympa.conf \
     && cp /usr/share/doc/sympa/examples/script/sympa_soap_client.pl.gz /usr/lib/sympa/bin/ \
     && gunzip /usr/lib/sympa/bin/sympa_soap_client.pl.gz \
     && chmod +x /usr/lib/sympa/bin/sympa_soap_client.pl \