[Rspamd] Not trigger FREEMAIL_POLICY for mailig lists (#3918)

data/conf/rspamd/local.d/composites.conf

@@ -8,7 +8,7 @@ VIRUS_FOUND {
 }
 # Bad policy from free mail providers
 FREEMAIL_POLICY_FAILURE {
-  expression = " -g+:policies & !DMARC_POLICY_ALLOW & ( FREEMAIL_ENVFROM | FREEMAIL_FROM ) & !WHITELISTED_FWD_HOST";
+  expression = "-g+:policies & !DMARC_POLICY_ALLOW & !MAILLIST & ( FREEMAIL_ENVFROM | FREEMAIL_FROM ) & !WHITELISTED_FWD_HOST";
   score = 16.0;
 }
 # Bad policy from non-whitelisted senders