diff -uwr dspam-2.10-RC1/configure.ac dspam-2.10-RC1.cygwin/configure.ac
--- dspam-2.10-RC1/configure.ac	2004-02-23 09:15:33.000000000 -0800
+++ dspam-2.10-RC1.cygwin/configure.ac	2004-02-25 08:28:42.622920000 -0800
@@ -92,6 +92,7 @@
         *-linux*)       MLOCAL="/usr/bin/procmail";;
         *-freebsd*)     MLOCAL="/usr/libexec/mail.local";;
         *-solaris2*)    MLOCAL="/usr/bin/mail";;
+        *-cygwin*)      MLOCAL="/usr/bin/procmail";;
     esac
 fi