diff --git a/pkgs/development/libraries/libmilter/default.nix b/pkgs/development/libraries/libmilter/default.nix
new file mode 100644
index 000000000000..6dcd51242cf1
--- /dev/null
+++ b/pkgs/development/libraries/libmilter/default.nix
@@ -0,0 +1,33 @@
+{stdenv, fetchurl, m4}:
+
+stdenv.mkDerivation rec {
+  name = "libmilter-8.14.4";
+  
+  src = fetchurl {
+    url = "ftp://ftp.sendmail.org/pub/sendmail/sendmail.8.14.4.tar.gz";
+    sha256 = "1cbwz5ynl8snrdkl7ay1qhqknbyv0qsvdvcri7mb662hgi1hj0dw";
+  };
+
+  buildPhase = '' 
+    ensureDir $out/lib
+    cd libmilter
+    cat > a.m4 <<EOF
+      define(\`confEBINDIR', \`$out/libexec')
+      define(\`confINCLUDEDIR', \`$out/include')
+      define(\`confLIBDIR', \`$out/lib')
+      define(\`confMANROOT', \`$out/man/cat')
+      define(\`confMANROOTMAN', \`$out/man/man')
+      define(\`confMBINDIR', \`$out/sbin')
+      define(\`confSBINDIR', \`$out/sbin')
+      define(\`confSHAREDLIBDIR', \`$out/lib')
+      define(\`confUBINDIR', \`$out/bin')
+      define(\`confINCGRP', \`root')
+      define(\`confLIBGRP', \`root')
+    EOF
+    sh Build -f ./a.m4
+  '';
+
+  patches = [ ./install.patch ];
+  
+  buildInputs = [m4];
+}
diff --git a/pkgs/development/libraries/libmilter/install.patch b/pkgs/development/libraries/libmilter/install.patch
new file mode 100644
index 000000000000..f6d3574ca4c1
--- /dev/null
+++ b/pkgs/development/libraries/libmilter/install.patch
@@ -0,0 +1,42 @@
+diff -rc sendmail-8.14.4/devtools/M4/UNIX/library.m4 sendmail-8.14.4-new/devtools/M4/UNIX/library.m4
+*** sendmail-8.14.4/devtools/M4/UNIX/library.m4	Wed Sep  6 00:56:53 2006
+--- sendmail-8.14.4-new/devtools/M4/UNIX/library.m4	Tue Feb  9 11:25:13 2010
+***************
+*** 28,34 ****
+  
+  install-`'bldCURRENT_PRODUCT: bldCURRENT_PRODUCT.a
+  ifdef(`bldINSTALLABLE', `	ifdef(`confMKDIR', `if [ ! -d ${DESTDIR}${bldINSTALL_DIR`'LIBDIR} ]; then confMKDIR -p ${DESTDIR}${bldINSTALL_DIR`'LIBDIR}; else :; fi ')
+! 	${INSTALL} -c -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} bldCURRENT_PRODUCT.a ${DESTDIR}${LIBDIR}')
+  
+  bldCURRENT_PRODUCT-clean:
+  	rm -f ${OBJS} bldCURRENT_PRODUCT.a ${MANPAGES}
+--- 28,34 ----
+  
+  install-`'bldCURRENT_PRODUCT: bldCURRENT_PRODUCT.a
+  ifdef(`bldINSTALLABLE', `	ifdef(`confMKDIR', `if [ ! -d ${DESTDIR}${bldINSTALL_DIR`'LIBDIR} ]; then confMKDIR -p ${DESTDIR}${bldINSTALL_DIR`'LIBDIR}; else :; fi ')
+! 	${INSTALL} -c bldCURRENT_PRODUCT.a ${DESTDIR}${LIBDIR}')
+  
+  bldCURRENT_PRODUCT-clean:
+  	rm -f ${OBJS} bldCURRENT_PRODUCT.a ${MANPAGES}
+diff -rc sendmail-8.14.4/libmilter/Makefile.m4 sendmail-8.14.4-new/libmilter/Makefile.m4
+*** sendmail-8.14.4/libmilter/Makefile.m4	Tue Nov 24 22:59:33 2009
+--- sendmail-8.14.4-new/libmilter/Makefile.m4	Tue Feb  9 10:47:19 2010
+***************
+*** 33,40 ****
+  MFDEF=	${SRCDIR}/inc`'lude/libmilter/mfdef.h
+  install-mfapi: ${MFAPI}
+  	if [ ! -d ${DESTDIR}${INCLUDEDIR}/libmilter ]; then mkdir -p ${DESTDIR}${INCLUDEDIR}/libmilter; else :; fi
+! 	${INSTALL} -c -o ${INCOWN} -g ${INCGRP} -m ${INCMODE} ${MFAPI} ${DESTDIR}${INCLUDEDIR}/libmilter/mfapi.h
+! 	${INSTALL} -c -o ${INCOWN} -g ${INCGRP} -m ${INCMODE} ${MFDEF} ${DESTDIR}${INCLUDEDIR}/libmilter/mfdef.h
+  divert(0)
+  
+  bldFINISH
+--- 33,40 ----
+  MFDEF=	${SRCDIR}/inc`'lude/libmilter/mfdef.h
+  install-mfapi: ${MFAPI}
+  	if [ ! -d ${DESTDIR}${INCLUDEDIR}/libmilter ]; then mkdir -p ${DESTDIR}${INCLUDEDIR}/libmilter; else :; fi
+! 	${INSTALL} -c ${MFAPI} ${DESTDIR}${INCLUDEDIR}/libmilter/mfapi.h
+! 	${INSTALL} -c ${MFDEF} ${DESTDIR}${INCLUDEDIR}/libmilter/mfdef.h
+  divert(0)
+  
+  bldFINISH
diff --git a/pkgs/development/libraries/opendkim/default.nix b/pkgs/development/libraries/opendkim/default.nix
new file mode 100644
index 000000000000..e77a241af729
--- /dev/null
+++ b/pkgs/development/libraries/opendkim/default.nix
@@ -0,0 +1,13 @@
+{stdenv, fetchurl, openssl, libmilter}:
+
+stdenv.mkDerivation rec {
+  name = "opendkim-1.2.2";
+  src = fetchurl {
+    url = "mirror://sourceforge/opendkim/files/${name}.tar.gz";
+    sha256 = "01kvhm10kv17mm4zfz0zd24wzr98fxqwyzm56m2l1v262ng3l4nw";
+  };
+
+  configureFlags="--with-openssl=${openssl} --with-milter=${libmilter}";
+
+  buildInputs = [openssl libmilter];
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 7571f337470f..6ec02e28d01f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1211,6 +1211,10 @@ let
     inherit fetchurl stdenv readline mysql postgresql sqlite;
   };
 
+  opendkim = import ../development/libraries/opendkim {
+    inherit fetchurl stdenv openssl libmilter;
+  };
+
   openjade = import ../tools/text/sgml/openjade {
     inherit fetchurl opensp perl;
     stdenv = overrideGCC stdenv gcc33;
@@ -4278,6 +4282,10 @@ let
     inherit fetchurl stdenv curl;
   };
 
+  libmilter = import ../development/libraries/libmilter {
+    inherit fetchurl stdenv m4;
+  };
+
   libmowgli = import ../development/libraries/libmowgli {
     inherit fetchurl stdenv;
   };