X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsrc%2Futf8.c;h=e8690fc39da290006dbd5f7448780ebc88181d67;hb=4c57a40e227ea6585cf1dd4bef37fbb15e1f7e35;hp=be5bcb0788176a22bc884502fda86a9ad2a5a27d;hpb=9427e87923288dfe6fdf80011f77bf4a135898ac;p=user%2Fhenk%2Fcode%2Fexim.git

diff --git a/src/src/utf8.c b/src/src/utf8.c
index be5bcb078..e8690fc39 100644
--- a/src/src/utf8.c
+++ b/src/src/utf8.c
@@ -52,6 +52,10 @@ uschar * s1, * s;
 int rc;
 
 #ifdef SUPPORT_I18N_2008
+/* Avoid lowercasing plain-ascii domains */
+if (!string_is_utf8(utf8))
+  return string_copy(utf8);
+
 /* Only lowercase is accepted by the library call.  A pity since we lose
 any mixed-case annotation.  This does not really matter for a domain. */
   {