diff --git a/meta-openembedded/meta-networking/recipes-daemons/postfix/files/0001-Fixed-build-failure-with-glibc-2.30-due-to-dropped-R.patch b/meta-openembedded/meta-networking/recipes-daemons/postfix/files/0001-Fixed-build-failure-with-glibc-2.30-due-to-dropped-R.patch
new file mode 100644
index 0000000..22adaff
--- /dev/null
+++ b/meta-openembedded/meta-networking/recipes-daemons/postfix/files/0001-Fixed-build-failure-with-glibc-2.30-due-to-dropped-R.patch
@@ -0,0 +1,37 @@
+From 8b3792830f4930fee7fbb00c854d9766f2b74dca Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 27 Jul 2019 11:35:38 -0700
+Subject: [PATCH] Fixed build failure with glibc 2.30 due to dropped
+ RES_INSECURE1/2 macros
+
+see [1]
+
+[1] https://sourceware.org/git/?p=glibc.git;a=commit;h=333221862ecbebde60dd16e7ca17d26444e62f50
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/dns/dns_str_resflags.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/src/dns/dns_str_resflags.c b/src/dns/dns_str_resflags.c
+index 5f2cce5..df32345 100644
+--- a/src/dns/dns_str_resflags.c
++++ b/src/dns/dns_str_resflags.c
+@@ -60,10 +60,16 @@ static const LONG_NAME_MASK resflag_table[] = {
+     "RES_DEFNAMES", RES_DEFNAMES,
+     "RES_STAYOPEN", RES_STAYOPEN,
+     "RES_DNSRCH", RES_DNSRCH,
++#ifdef RES_INSECURE1
+     "RES_INSECURE1", RES_INSECURE1,
++#endif
++#ifdef RES_INSECURE2
+     "RES_INSECURE2", RES_INSECURE2,
++#endif
+     "RES_NOALIASES", RES_NOALIASES,
++#ifdef RES_USE_INET6
+     "RES_USE_INET6", RES_USE_INET6,
++#endif
+ #ifdef RES_ROTATE
+     "RES_ROTATE", RES_ROTATE,
+ #endif
diff --git a/meta-openembedded/meta-networking/recipes-daemons/postfix/postfix.inc b/meta-openembedded/meta-networking/recipes-daemons/postfix/postfix.inc
index 3d4f1df..7781005 100644
--- a/meta-openembedded/meta-networking/recipes-daemons/postfix/postfix.inc
+++ b/meta-openembedded/meta-networking/recipes-daemons/postfix/postfix.inc
@@ -14,17 +14,6 @@
 LICENSE = "IPL-1.0 | EPL-2.0"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=b181651ad99a7dc4cc8c4ce2f491ed1a"
 
-SRC_URI = "ftp://ftp.porcupine.org/mirrors/postfix-release/official/postfix-${PV}.tar.gz \
-    file://makedefs.patch \
-    file://install.patch \
-    file://main.cf \
-    file://postfix \
-    file://internal_recipient \
-    file://postfix.service \
-    file://aliasesdb \
-    file://check_hostname.sh \
-"
-
 S = "${WORKDIR}/postfix-${PV}"
 
 CLEANBROKEN = "1"
@@ -196,11 +185,15 @@
     ln -sf ../sbin/sendmail.postfix ${D}${bindir}/mailq
 }
 
-ALTERNATIVE_${PN} += "sendmail mailq newaliases"
+ALTERNATIVE_${PN} = "sendmail mailq newaliases"
+# /usr/lib/sendmial is required by LSB core test
+ALTERNATIVE_${PN}_linuxstdbase = "sendmail mailq newaliases usr-lib-sendmail"
 ALTERNATIVE_TARGET[mailq] = "${bindir}/mailq"
 ALTERNATIVE_TARGET[newaliases] = "${bindir}/newaliases"
 ALTERNATIVE_TARGET[sendmail] = "${sbindir}/sendmail.postfix"
 ALTERNATIVE_LINK_NAME[sendmail] = "${sbindir}/sendmail"
+ALTERNATIVE_TARGET[usr-lib-sendmail] = "${sbindir}/sendmail.postfix"
+ALTERNATIVE_LINK_NAME[usr-lib-sendmail] = "/usr/lib/sendmail"
 
 ALTERNATIVE_PRIORITY = "120"
 
@@ -219,11 +212,6 @@
         touch /etc/postfix/virtual_alias
         postmap /etc/postfix/virtual_alias
     else
-        if ${@'true' if 'linuxstdbase' in d.getVar('DISTROOVERRIDES', False) else 'false'}; then
-            # /usr/lib/sendmail is required by LSB core test
-            [ ! -L $D/usr/lib/sendmail ] && ln -sf ${sbindir}/sendmail $D/usr/lib/
-        fi
-
         touch $D/etc/aliases
         # This can fail depending on host setup
         if ! newaliases -C $D/etc/postfix/main.cf -oA$D/etc/aliases; then
diff --git a/meta-openembedded/meta-networking/recipes-daemons/postfix/postfix_3.4.5.bb b/meta-openembedded/meta-networking/recipes-daemons/postfix/postfix_3.4.5.bb
index 3ce8055..189baea 100644
--- a/meta-openembedded/meta-networking/recipes-daemons/postfix/postfix_3.4.5.bb
+++ b/meta-openembedded/meta-networking/recipes-daemons/postfix/postfix_3.4.5.bb
@@ -1,9 +1,19 @@
 require postfix.inc
 
-SRC_URI += "file://0001-makedefs-Use-native-compiler-to-build-makedefs.test.patch \
-            file://postfix-install.patch \
-            file://icu-config.patch \
-            file://0001-makedefs-add-lnsl-and-lresolv-to-SYSLIBS-by-default.patch \
+SRC_URI += "ftp://ftp.porcupine.org/mirrors/postfix-release/official/postfix-${PV}.tar.gz \
+           file://makedefs.patch \
+           file://install.patch \
+           file://main.cf \
+           file://postfix \
+           file://internal_recipient \
+           file://postfix.service \
+           file://aliasesdb \
+           file://check_hostname.sh \
+           file://0001-makedefs-Use-native-compiler-to-build-makedefs.test.patch \
+           file://postfix-install.patch \
+           file://icu-config.patch \
+           file://0001-makedefs-add-lnsl-and-lresolv-to-SYSLIBS-by-default.patch \
+           file://0001-Fixed-build-failure-with-glibc-2.30-due-to-dropped-R.patch \
            "
 SRC_URI[md5sum] = "093109941095390562166de766d4720d"
 SRC_URI[sha256sum] = "8b2ba54f9d2a049582a0ed3ee2dbe96ba57e278feea9cb4f80e1a61844e6319f"