diff options
| -rw-r--r-- | src/src/utf8.c | 4 |
1 files changed, 4 insertions, 0 deletions
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. */ { |