Index: postfix-3.2.2/postfix-install
===================================================================
--- postfix-3.2.2.orig/postfix-install
+++ postfix-3.2.2/postfix-install
@@ -843,7 +843,7 @@ IFS="$BACKUP_IFS"
 # the wrong place when Postfix is being upgraded.
 
 case "$mail_version" in
-"") mail_version="`$POSTCONF -dhx mail_version`" || exit 1
+"") mail_version="`$POSTCONF -c $CONFIG_DIRECTORY -dhx mail_version`" || exit 1
 esac
 
 # Undo MAIL_VERSION expansion at the end of a parameter value. If
Index: postfix-3.2.2/Makefile.in
===================================================================
--- postfix-3.2.2.orig/Makefile.in
+++ postfix-3.2.2/Makefile.in
@@ -20,7 +20,7 @@ META	= meta/main.cf.proto meta/master.cf
 EXPAND	= sed -e "s;\$${LIB_PREFIX};$(LIB_PREFIX);" \
 	    -e "s;\$${LIB_SUFFIX};$(LIB_SUFFIX);"
 SHLIB_DIR_OVERRIDE = \
-	$${shlib_directory:-`$(SHLIB_ENV) bin/postconf -dhx shlib_directory`}
+	$${shlib_directory:-`$(SHLIB_ENV) $(POSTCONF) -dhx shlib_directory`}
 
 default: update