X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/9427e87923288dfe6fdf80011f77bf4a135898ac..4226691b79845d9b41041e2f64a3a241dcb99f4d:/src/src/utf8.c

diff --git a/src/src/utf8.c b/src/src/utf8.c
index be5bcb078..255383051 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. */
   {
@@ -94,6 +98,7 @@ string_domain_alabel_to_utf8(const uschar * alabel, uschar ** err)
 const uschar * label;
 int sep = '.';
 uschar * s = NULL;
+int size = 0, len = 0;
 
 while (label = string_nextinlist(&alabel, &sep, NULL, 0))
   if (  string_is_alabel(label)
@@ -101,7 +106,7 @@ while (label = string_nextinlist(&alabel, &sep, NULL, 0))
      )
     return NULL;
   else
-    s = string_append_listele(s, '.', label);
+    s = string_append_listele(s, &size, &len, '.', label);
 return s;
 
 #else
@@ -198,7 +203,7 @@ return NULL;
 /* Whole address conversion.
 The *err string pointer should be null before the call.
 
-Return NULL on oeeror, with (optional) errstring pointer filled in
+Return NULL on error, with (optional) errstring pointer filled in
 */
 
 uschar *