diff -ur stunnel/src/verify.c stunnel-4.20/src/verify.c
--- stunnel/src/verify.c	2006-11-01 15:59:16.000000000 +0100
+++ stunnel-4.20/src/verify.c	2007-04-27 05:01:22.000000000 +0200
@@ -69,10 +69,8 @@
             sslerror("SSL_CTX_load_verify_locations");
             exit(1);
         }
-#if 0
         SSL_CTX_set_client_CA_list(section->ctx,
             SSL_load_client_CA_file(section->ca_file));
-#endif
         s_log(LOG_DEBUG, "Loaded verify certificates from %s",
             section->ca_file);
         load_file_lookup(section->revocation_store, section->ca_file);