Prereq: "3.4.2"
diff -ur --new-file /var/tmp/postfix-3.4.2/src/global/mail_version.h ./src/global/mail_version.h
--- /var/tmp/postfix-3.4.2/src/global/mail_version.h	2019-03-10 17:27:36.000000000 -0400
+++ ./src/global/mail_version.h	2019-03-10 19:45:42.000000000 -0400
@@ -21,7 +21,7 @@
   * patchlevel; they change the release date only.
   */
 #define MAIL_RELEASE_DATE	"20190310"
-#define MAIL_VERSION_NUMBER	"3.4.2"
+#define MAIL_VERSION_NUMBER	"3.4.3"
 
 #ifdef SNAPSHOT
 #define MAIL_VERSION_DATE	"-" MAIL_RELEASE_DATE
diff -ur --new-file /var/tmp/postfix-3.4.2/makedefs ./makedefs
--- /var/tmp/postfix-3.4.2/makedefs	2019-02-10 18:11:21.000000000 -0500
+++ ./makedefs	2019-03-10 19:42:59.000000000 -0400
@@ -557,7 +557,7 @@
 		: ${SHLIB_ENV="LD_LIBRARY_PATH=`pwd`/lib"}
 		: ${PLUGIN_LD="${CC-gcc} -shared"}
 		;;
-  Linux.[34].*)	SYSTYPE=LINUX$RELEASE_MAJOR
+ Linux.[345].*)	SYSTYPE=LINUX$RELEASE_MAJOR
 		case "$CCARGS" in
 		 *-DNO_DB*) ;;
 		 *-DHAS_DB*) ;;