From 6741531cf79cbd3b403b8a52ed07635fe543cd3a Mon Sep 17 00:00:00 2001
From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Mon, 12 Feb 2018 17:29:22 +0000
Subject: ACL: Enforce non-usability of control=utf8_downconvert in MAIL ACL. 
 Bug 2239

---
 src/src/acl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/src/acl.c b/src/src/acl.c
index bc26e2d58..fb8b75bc7 100644
--- a/src/src/acl.c
+++ b/src/src/acl.c
@@ -523,7 +523,8 @@ static control_def controls_list[] = {
   },
 #ifdef SUPPORT_I18N
 [CONTROL_UTF8_DOWNCONVERT] =
-  { US"utf8_downconvert",        TRUE, 0 }
+  { US"utf8_downconvert",        TRUE, (unsigned) ~(ACL_BIT_RCPT | ACL_BIT_VRFY)
+  }
 #endif
 };
 
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