Add basic antispam filter rules to Mailman

roles/mailman/templates/mailman.cfg.j2

@@ -45,6 +45,30 @@ enable: yes
 enable: yes
 
 
+[antispam]
+# This section defines basic antispam detection settings.
+
+# This value contains lines which specify RFC 822 headers in the email to
+# check for spamminess.  Each line contains a `key: value` pair, where the key
+# is the header to check and the value is a Python regular expression to match
+# against the header's value.  E.g.:
+#
+# X-Spam: (yes|maybe)
+#
+# The header value and regular expression are always matched
+# case-insensitively.
+header_checks:
+    X-Spam: yes
+    X-Spam-Flag: Yes
+    X-Spam-Status: Yes
+
+# The chain to jump to if any of the header patterns matches.  This must be
+# the name of an existing chain such as 'discard', 'reject', 'hold', or
+# 'accept', otherwise 'hold' will be used.
+jump_chain: hold
+
+
+
 # http://www.lingoes.net/en/translator/langcode.htm
 
 [language.pt]

roles/mailman/templates/mailman.cfg.lists-dev.cloud.fedoraproject.org.j2

@@ -42,6 +42,30 @@ configuration: {{ mailman_webui_confdir }}/mailman-hyperkitty.cfg
 enable: yes
 
 
+[antispam]
+# This section defines basic antispam detection settings.
+
+# This value contains lines which specify RFC 822 headers in the email to
+# check for spamminess.  Each line contains a `key: value` pair, where the key
+# is the header to check and the value is a Python regular expression to match
+# against the header's value.  E.g.:
+#
+# X-Spam: (yes|maybe)
+#
+# The header value and regular expression are always matched
+# case-insensitively.
+header_checks:
+    X-Spam: yes
+    X-Spam-Flag: Yes
+    X-Spam-Status: Yes
+
+# The chain to jump to if any of the header patterns matches.  This must be
+# the name of an existing chain such as 'discard', 'reject', 'hold', or
+# 'accept', otherwise 'hold' will be used.
+jump_chain: hold
+
+
+
 # http://www.lingoes.net/en/translator/langcode.htm
 
 [language.pt]