--- sudo-1.8.6/plugins/sudoers/env.c	2011-01-24 21:39:13.000000000 +0200
+++ sudo-1.8.6/plugins/sudoers/env.c	2011-03-06 11:00:00.580457486 +0200
@@ -196,12 +196,15 @@
 static const char *initial_keepenv_table[] = {
     "COLORS",
     "DISPLAY",
+    "HOME",
     "HOSTNAME",
     "KRB5CCNAME",
     "LS_COLORS",
+    "MAIL",
     "PATH",
     "PS1",
     "PS2",
+    "SSH_AUTH_SOCK",
     "TZ",
     "XAUTHORITY",
     "XAUTHORIZATION",