diff -NrU5 postal-0.69.orig/bhm.cpp postal-0.69/bhm.cpp
--- postal-0.69.orig/bhm.cpp	2008-04-23 22:39:01.000000000 +0200
+++ postal-0.69/bhm.cpp	2008-04-24 01:31:54.000000000 +0200
@@ -7,10 +7,11 @@
 #include <ctype.h>
 #include <unistd.h>
 #include <sys/wait.h>
 #include <signal.h>
 #include <stdio.h>
+#include <cstdlib>
 #include <sys/poll.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <arpa/inet.h>
 #include <netinet/ip.h>
diff -NrU5 postal-0.69.orig/bhmusers.cpp postal-0.69/bhmusers.cpp
--- postal-0.69.orig/bhmusers.cpp	2008-04-10 03:36:27.000000000 +0200
+++ postal-0.69/bhmusers.cpp	2008-04-24 00:04:07.000000000 +0200
@@ -1,9 +1,10 @@
 #include "bhmusers.h"
 #include <stdio.h>
 #include <cstring>
 #include "expand.h"
+#include <cstdlib>
 
 BHMUsers::BHMUsers(const char *userListFile)
 {
   char buf[1024];
   FILE *fp = fopen(userListFile, "r");
diff -NrU5 postal-0.69.orig/bhmusers.h postal-0.69/bhmusers.h
--- postal-0.69.orig/bhmusers.h	2006-09-28 17:20:28.000000000 +0200
+++ postal-0.69/bhmusers.h	2008-04-24 00:14:05.000000000 +0200
@@ -4,16 +4,21 @@
 using namespace std;
 
 #include <string>
 #include "conf.h"
 
+#ifdef HAVE_STDCXX_0X
+#include <unordered_map>
+#include <tr1/functional_hash.h>
+#else
 #ifdef HAVE_EXT_HASH_MAP
 using namespace __gnu_cxx;
 #include <ext/hash_map>
 #else
 #include <hash_map.h>
 #endif
+#endif
 
 #include "postal.h"
 
 typedef enum { eNone = 0, eDefer, eReject, eBounce, eGrey } USER_SMTP_ACTION;
 
@@ -21,10 +26,13 @@
 {
   USER_SMTP_ACTION action;
   int sync_time;
 } BHM_DATA;
 
+#ifdef HAVE_STDCXX_0X
+typedef unordered_map<string, BHM_DATA , hash<string> > NAME_MAP;
+#else
 namespace __gnu_cxx
 {
   template<> struct hash< std::string >
   {
     size_t operator() ( const std::string &x ) const
@@ -33,10 +41,11 @@
     }
   };
 }
 
 typedef hash_map<string, BHM_DATA , hash<string> > NAME_MAP;
+#endif
 
 class BHMUsers
 {
 public:
   BHMUsers(const char *userListFile);
diff -NrU5 postal-0.69.orig/configure.in postal-0.69/configure.in
--- postal-0.69.orig/configure.in	2008-04-23 22:39:01.000000000 +0200
+++ postal-0.69/configure.in	2008-04-24 01:20:35.000000000 +0200
@@ -155,6 +155,98 @@
 
 AC_CHECK_HEADERS(vector ext/hash_map)
 
 dnl Checks for library functions.
 
+AC_DEFUN([AC_COMPILE_STDCXX_0X], [
+  AC_CACHE_CHECK(if g++ supports C++0x features without additional flags,
+  ac_cv_cxx_compile_cxx0x_native,
+  [AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  AC_TRY_COMPILE([
+  template <typename T>
+    struct check 
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+    typedef check<check<bool>> right_angle_brackets;
+
+    int a;
+    decltype(a) b;
+
+    typedef check<int> check_type;
+    check_type c;
+    check_type&& cr = c;],,
+  ac_cv_cxx_compile_cxx0x_native=yes, ac_cv_cxx_compile_cxx0x_native=no)
+  AC_LANG_RESTORE
+  ])
+
+  AC_CACHE_CHECK(if g++ supports C++0x features with -std=c++0x,
+  ac_cv_cxx_compile_cxx0x_cxx,
+  [AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -std=c++0x"       
+  AC_TRY_COMPILE([
+  template <typename T>
+    struct check 
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+    typedef check<check<bool>> right_angle_brackets;
+
+    int a;
+    decltype(a) b;
+
+    typedef check<int> check_type;
+    check_type c;
+    check_type&& cr = c;],,
+  ac_cv_cxx_compile_cxx0x_cxx=yes, ac_cv_cxx_compile_cxx0x_cxx=no)
+  CXXFLAGS="$ac_save_CXXFLAGS"
+  AC_LANG_RESTORE
+  ])
+
+  AC_CACHE_CHECK(if g++ supports C++0x features with -std=gnu++0x,
+  ac_cv_cxx_compile_cxx0x_gxx,
+  [AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -std=gnu++0x"     
+  AC_TRY_COMPILE([
+  template <typename T>
+    struct check 
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+    typedef check<check<bool>> right_angle_brackets;
+
+    int a;
+    decltype(a) b;
+
+    typedef check<int> check_type;
+    check_type c;
+    check_type&& cr = c;],,
+  ac_cv_cxx_compile_cxx0x_gxx=yes, ac_cv_cxx_compile_cxx0x_gxx=no)
+  CXXFLAGS="$ac_save_CXXFLAGS"
+  AC_LANG_RESTORE
+  ])
+
+  if test "$ac_cv_cxx_compile_cxx0x_native" = yes || 
+     test "$ac_cv_cxx_compile_cxx0x_cxx" = yes || 
+     test "$ac_cv_cxx_compile_cxx0x_gxx" = yes; then
+    AC_DEFINE(HAVE_STDCXX_0X,,[Define if g++ supports C++0x features. ])
+  fi
+])
+
+AC_COMPILE_STDCXX_0X
+
+AC_SUBST(cstd)
+cstd=
+if test "$ac_cv_cxx_compile_cxx0x_cxx" = yes; then
+	cstd=-std=c++0x
+fi
+
 AC_OUTPUT(Makefile postal.h port.h postal.spec sun/pkginfo)
+
diff -NrU5 postal-0.69.orig/Makefile.in postal-0.69/Makefile.in
--- postal-0.69.orig/Makefile.in	2008-04-23 22:39:01.000000000 +0200
+++ postal-0.69/Makefile.in	2008-04-24 00:29:40.000000000 +0200
@@ -8,12 +8,12 @@
 prefix=@prefix@
 eprefix=@exec_prefix@
 WFLAGS=-Wall -W -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Wcast-qual -pedantic
 WPLUS=-Woverloaded-virtual -ffor-scope
 
-CXX=@CXX@ $(CFLAGS) -O2 -g $(WFLAGS) $(WPLUS)
-CC=@CC@ $(CFLAGS) -O2 -g $(WFLAGS)
+CXX=@CXX@ @cstd@ $(CFLAGS) $(WFLAGS) $(WPLUS)
+CC=@CC@ $(CFLAGS) $(WFLAGS)
 
 INSTALL=@INSTALL@
 
 TESTEXE=ex-test
 BASEOBJS=userlist.o thread.o results.o address.o tcp.o cmd5.o mutex.o logit.o expand.o @extra_objs@
diff -NrU5 postal-0.69.orig/postal.cpp postal-0.69/postal.cpp
--- postal-0.69.orig/postal.cpp	2007-01-14 05:40:23.000000000 +0100
+++ postal-0.69/postal.cpp	2008-04-24 01:30:49.000000000 +0200
@@ -6,10 +6,11 @@
 #include "smtp.h"
 #include <unistd.h>
 #include <sys/wait.h>
 #include <signal.h>
 #include <stdio.h>
+#include <cstdlib>
 #include "postal.h"
 #include "logit.h"
 #ifdef USE_GNUTLS
 #include <errno.h>
 #include <gcrypt.h>
diff -NrU5 postal-0.69.orig/smtp.cpp postal-0.69/smtp.cpp
--- postal-0.69.orig/smtp.cpp	2008-04-19 00:01:39.000000000 +0200
+++ postal-0.69/smtp.cpp	2008-04-24 00:14:49.000000000 +0200
@@ -7,10 +7,11 @@
 #include <time.h>
 #include "userlist.h"
 #include "logit.h"
 #include "results.h"
 #include <cstring>
+#include <cstdlib>
 
 smtpData::smtpData()
  : m_quit("QUIT\r\n")
  , m_randomLetters("abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 1234567890 `~!@#$%^&*()-_=+[]{};:'\"|/?<>,")
  , m_randomLen(strlen(m_randomLetters))
diff -NrU5 postal-0.69.orig/smtp.h postal-0.69/smtp.h
--- postal-0.69.orig/smtp.h	2008-04-19 00:01:23.000000000 +0200
+++ postal-0.69/smtp.h	2008-04-24 00:18:03.000000000 +0200
@@ -4,16 +4,20 @@
 using namespace std;
 #include <string>
 #include <cstring>
 #include <time.h>
 #include "conf.h"
+#ifdef HAVE_STDCXX_0X
+#include <unordered_map>
+#else
 #ifdef HAVE_EXT_HASH_MAP
 using namespace __gnu_cxx;
 #include <ext/hash_map>
 #else
 #include <hash_map.h>
 #endif
+#endif
 #include "tcp.h"
 #include "mutex.h"
 
 class results;
 
@@ -28,11 +32,15 @@
   {
     return (l1 == l2);
   }
 };
 
+#ifdef HAVE_STDCXX_0X
+typedef unordered_map<unsigned long, string *, hash<unsigned long>, eqlng> NAME_MAP;
+#else
 typedef hash_map<unsigned long, string *, hash<unsigned long>, eqlng> NAME_MAP;
+#endif
 
 class smtpData
 {
 public:
   smtpData();