diff --git a/tests/data/test1034 b/tests/data/test1034
index d926e82ba7..d80e35e6f7 100644
--- a/tests/data/test1034
+++ b/tests/data/test1034
@@ -29,7 +29,7 @@ proxy
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test1035 b/tests/data/test1035
index fc5f1c28f2..3b7156e106 100644
--- a/tests/data/test1035
+++ b/tests/data/test1035
@@ -27,7 +27,7 @@ proxy
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test1448 b/tests/data/test1448
index 96d64b85a5..ea35689da0 100644
--- a/tests/data/test1448
+++ b/tests/data/test1448
@@ -43,7 +43,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test1560 b/tests/data/test1560
index 976cc98ec2..9cb3fa96bd 100644
--- a/tests/data/test1560
+++ b/tests/data/test1560
@@ -13,7 +13,7 @@ urlapi
 none
 </server>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 </setenv>
 <features>
 file
diff --git a/tests/data/test165 b/tests/data/test165
index 0b5cfd2346..7444f88838 100644
--- a/tests/data/test165
+++ b/tests/data/test165
@@ -33,7 +33,7 @@ proxy
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test2046 b/tests/data/test2046
index cf25d0c57b..66b852c5e5 100644
--- a/tests/data/test2046
+++ b/tests/data/test2046
@@ -43,7 +43,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test2047 b/tests/data/test2047
index c32e6aabc7..b04cbc14be 100644
--- a/tests/data/test2047
+++ b/tests/data/test2047
@@ -44,7 +44,7 @@ proxy
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test955 b/tests/data/test955
index 817b47a67e..055275d704 100644
--- a/tests/data/test955
+++ b/tests/data/test955
@@ -24,7 +24,7 @@ smtp
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test956 b/tests/data/test956
index 4546f2ee61..d0507de939 100644
--- a/tests/data/test956
+++ b/tests/data/test956
@@ -21,7 +21,7 @@ smtp
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test957 b/tests/data/test957
index 9548627b98..569b779ab9 100644
--- a/tests/data/test957
+++ b/tests/data/test957
@@ -22,7 +22,7 @@ smtp
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test958 b/tests/data/test958
index f1006a0a66..f09cc78d80 100644
--- a/tests/data/test958
+++ b/tests/data/test958
@@ -22,7 +22,7 @@ smtp
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test959 b/tests/data/test959
index 2154600da2..516c876d97 100644
--- a/tests/data/test959
+++ b/tests/data/test959
@@ -25,7 +25,7 @@ smtp
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test960 b/tests/data/test960
index fb50a326b2..92d99125fe 100644
--- a/tests/data/test960
+++ b/tests/data/test960
@@ -22,7 +22,7 @@ smtp
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test961 b/tests/data/test961
index 2068d8fc84..0199624d30 100644
--- a/tests/data/test961
+++ b/tests/data/test961
@@ -23,7 +23,7 @@ smtp
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test962 b/tests/data/test962
index 80292862ba..cd3b46f94d 100644
--- a/tests/data/test962
+++ b/tests/data/test962
@@ -23,7 +23,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test963 b/tests/data/test963
index 5d3bae7b56..b3a0051903 100644
--- a/tests/data/test963
+++ b/tests/data/test963
@@ -23,7 +23,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test964 b/tests/data/test964
index 12c312eccd..95ee6b77d8 100644
--- a/tests/data/test964
+++ b/tests/data/test964
@@ -24,7 +24,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test965 b/tests/data/test965
index 0d29c09849..94e8d40ea6 100644
--- a/tests/data/test965
+++ b/tests/data/test965
@@ -26,7 +26,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test966 b/tests/data/test966
index b642e19a9d..58647e5f7f 100644
--- a/tests/data/test966
+++ b/tests/data/test966
@@ -26,7 +26,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test967 b/tests/data/test967
index f6e2e32382..48a5bb67b5 100644
--- a/tests/data/test967
+++ b/tests/data/test967
@@ -30,7 +30,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>
diff --git a/tests/data/test968 b/tests/data/test968
index 8532c35e7d..35dce64955 100644
--- a/tests/data/test968
+++ b/tests/data/test968
@@ -27,7 +27,7 @@ IDN
 codeset-utf8
 </features>
 <setenv>
-LC_ALL=en_US.UTF-8
+LC_ALL
 LC_CTYPE=en_US.UTF-8
 </setenv>
 <name>