diff --git a/README.md b/README.md
index b93e58c..50205f9 100644
--- a/README.md
+++ b/README.md
@@ -88,6 +88,14 @@ Defaults:
     #       - foobar
     spamassassin_spamtraining_users: []
 
+    # Set custom spamassasssin rules
+    # spamassassin_custom_rules:
+    #   - |
+    #     header   SPF_FAIL	eval:check_for_spf_fail()
+    #     describe SPF_FAIL	SPF: sender does not match SPF record (fail)
+    #     tflags   SPF_FAIL	net
+    #     reuse    SPF_FAIL
+
     # Set custom spamassassin scores
     # spamassassin_custom_scores:
     #    - name: SPF_FAIL
diff --git a/defaults/main.yml b/defaults/main.yml
index 5694013..f3c08f4 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -137,6 +137,15 @@ spamassassin_razor_config_dir: /etc/spamassassin/.razor
 #       - foobar
 spamassassin_spamtraining_users: []
 
+# Set custom spamassasssin rules
+# spamassassin_custom_rules:
+#   - |
+#     header   SPF_FAIL	eval:check_for_spf_fail()
+#     describe SPF_FAIL	SPF: sender does not match SPF record (fail
+#     tflags   SPF_FAIL	net
+#     reuse    SPF_FAIL
+spamassassin_custom_rules: []
+
 # Set custom spamassassin scores
 # spamassassin_custom_scores:
 #    - name: SPF_FAIL
diff --git a/templates/spamassassin/local.cf.j2 b/templates/spamassassin/local.cf.j2
index 519c74d..d15e5f8 100644
--- a/templates/spamassassin/local.cf.j2
+++ b/templates/spamassassin/local.cf.j2
@@ -182,6 +182,13 @@ use_razor2 0
 {% endif %}
 razor_config {{ spamassassin_razor_config_dir }}
 
+{% if spamassassin_custom_rules %}
+# custom rules
+{% for rule in spamassassin_custom_rules %}
+{{ rule }}
+{% endfor %}
+{% endif -%}
+
 {% if spamassassin_custom_scores %}
 # custom scores
 {% for score in spamassassin_custom_scores %}