1 files changed, 3 insertions, 0 deletions

diff --git a/conf.d/020_acl.conf b/conf.d/020_acl.conf
index 5ed0fa7..1ff3d1e 100644
--- a/conf.d/020_acl.conf
+++ b/conf.d/020_acl.conf
@@ -14,6 +14,9 @@ acl_check_mail_introduction:
   require  condition     = ${if def:sender_helo_name}
            set acl_m_msg = HELO/EHLO command required.
 
+  require  verify        = reverse_host_lookup/defer_ok
+           set acl_m_msg = HELO/EHLO lookup yielded mismatch.
+
   accept