diff --git a/data/Dockerfiles/postfix/postfix.sh b/data/Dockerfiles/postfix/postfix.sh
index 8ffb76f6a..da0b93769 100755
--- a/data/Dockerfiles/postfix/postfix.sh
+++ b/data/Dockerfiles/postfix/postfix.sh
@@ -403,7 +403,6 @@ postscreen_dnsbl_sites = wl.mailspike.net=127.0.0.[18;19;20]*-2
   list.dnswl.org=127.0.[0..255].1*-4
   list.dnswl.org=127.0.[0..255].2*-6
   list.dnswl.org=127.0.[0..255].3*-8
-  ix.dnsbl.manitu.net*2
   bl.spamcop.net*2
   bl.suomispam.net*2
   hostkarma.junkemailfilter.com=127.0.0.2*3