diff --git a/README.md b/README.md
index 8609597..dda39c5 100644
--- a/README.md
+++ b/README.md
@@ -639,6 +639,9 @@ Il faudrait également mettre en place des SPF, DKIM et DMARC **inbound** pour s
 Liens tutos:
 
 https://www.malekal.com/installer-configurer-postfix-spf-dkim-dmarc/
+
 https://petermolnar.net/article/howto-spf-dkim-dmarc-postfix/#postfix
+
 https://words.bombast.net/postfix-with-spf-dkim-and-dmarc/
+
 https://datacadamia.com/marketing/email/postfix/opendkim
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