diff --git a/roles/shell/files/etc/postfix/main.cf b/roles/shell/files/etc/postfix/main.cf
index ee859ce..01f86e4 100644
--- a/roles/shell/files/etc/postfix/main.cf
+++ b/roles/shell/files/etc/postfix/main.cf
@@ -63,6 +63,7 @@ smtpd_recipient_restrictions =
  reject_rbl_client blackholes.tepucom.nl,
  reject_rbl_client spam.dnsbl.anonmails.de,
  reject_rbl_client all.spamrats.com,
+ reject_rbl_client ix.dnsbl.manitu.net,
  reject_rbl_client sbl.spamhaus.org,
  reject_rbl_client xbl.spamhaus.org,
  reject_rhsbl_sender dbl.spamhaus.org