diff --git a/policy/modules/services/exim.te b/policy/modules/services/exim.te
index 980dd395f..b62ee12f0 100644
--- a/policy/modules/services/exim.te
+++ b/policy/modules/services/exim.te
@@ -192,6 +192,9 @@ optional_policy(`
 ')
 
 optional_policy(`
+	# https://bugzilla.redhat.com/show_bug.cgi?id=512710
+	# uses sendmail for outgoing mail and exim
+	# for incoming mail
 	sendmail_manage_tmp_files(exim_t)
 ')