diff --git a/install/rhel/7/exim/dnsbl.conf b/install/rhel/7/exim/dnsbl.conf
index 5166b255e..054973a1e 100644
--- a/install/rhel/7/exim/dnsbl.conf
+++ b/install/rhel/7/exim/dnsbl.conf
@@ -1,2 +1,5 @@
 bl.spamcop.net
+sbl.spamhaus.org
+xbl.spamhaus.org
+pbl.spamhaus.org
 zen.spamhaus.org