diff --git a/postfix-3.6.2-glibc-234-build-fix.patch b/postfix-3.6.2-glibc-234-build-fix.patch
new file mode 100644
index 0000000..71ea284
--- /dev/null
+++ b/postfix-3.6.2-glibc-234-build-fix.patch
@@ -0,0 +1,43 @@
+diff --git a/src/util/sys_compat.c b/src/util/sys_compat.c
+index 8bf8e58..c87f043 100644
+--- a/src/util/sys_compat.c
++++ b/src/util/sys_compat.c
+@@ -286,7 +286,7 @@ int     dup2_pass_on_exec(int oldd, int newd)
+ 
+ /* closefrom() - closes all file descriptors from the given one up */
+ 
+-int     closefrom(int lowfd)
++void     closefrom(int lowfd)
+ {
+     int     fd_limit = open_limit(0);
+     int     fd;
+@@ -298,14 +298,14 @@ int     closefrom(int lowfd)
+      */
+     if (lowfd < 0) {
+ 	errno = EBADF;
+-	return (-1);
++	return;
+     }
+     if (fd_limit > 500)
+ 	fd_limit = 500;
+     for (fd = lowfd; fd < fd_limit; fd++)
+ 	(void) close(fd);
+ 
+-    return (0);
++    return;
+ }
+ 
+ #endif
+diff --git a/src/util/sys_defs.h b/src/util/sys_defs.h
+index 99bec9b..16e27db 100644
+--- a/src/util/sys_defs.h
++++ b/src/util/sys_defs.h
+@@ -1509,7 +1509,7 @@ extern int setsid(void);
+ #endif
+ 
+ #ifndef HAS_CLOSEFROM
+-extern int closefrom(int);
++extern void closefrom(int);
+ 
+ #endif
+ 
diff --git a/postfix.spec b/postfix.spec
index a979330..44d861a 100644
--- a/postfix.spec
+++ b/postfix.spec
@@ -48,8 +48,8 @@
 
 Name: postfix
 Summary: Postfix Mail Transport Agent
-Version: 3.6.1
-Release: 3%{?dist}
+Version: 3.6.2
+Release: 1%{?dist}
 Epoch: 2
 URL: http://www.postfix.org
 License: (IBM and GPLv2+) or (EPL-2.0 and GPLv2+)
@@ -94,6 +94,9 @@ Patch9: pflogsumm-1.1.5-datecalc.patch
 # rhbz#1384871, sent upstream
 Patch10: pflogsumm-1.1.5-ipv6-warnings-fix.patch
 Patch11: postfix-3.4.4-chroot-example-fix.patch
+# bug report sent upstream, the fedora patch is a hack,
+# please do not reuse ;)
+Patch12: postfix-3.6.2-glibc-234-build-fix.patch
 
 # Optional patches - set the appropriate environment variables to include
 #                    them when building the package/spec file
@@ -244,6 +247,7 @@ pushd pflogsumm-%{pflogsumm_ver}
 popd
 %endif
 %patch11 -p1 -b .chroot-example-fix
+%patch12 -p1 -b .glibc-234-build-fix
 
 for f in README_FILES/TLS_{LEGACY_,}README TLS_ACKNOWLEDGEMENTS; do
 	iconv -f iso8859-1 -t utf8 -o ${f}{_,} &&
@@ -791,6 +795,10 @@ fi
 %endif
 
 %changelog
+* Thu Jul 29 2021 Jaroslav Škarvada <jskarvad@redhat.com> - 2:3.6.2-1
+- New version
+  Resolves: rhbz#1985778
+
 * Fri Jul 23 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2:3.6.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild
 
diff --git a/sources b/sources
index 042366b..789e795 100644
--- a/sources
+++ b/sources
@@ -1,2 +1 @@
-SHA512 (postfix-3.6.1.tar.gz) = 6f83a6aa55bd442fe005b35c7470483ff5ba6781121f783b07ef454580354fc5c85d0d5106936810d6bef0f5592937f0863eec3b82e138caac7694e2a3bb7bc3
-SHA512 (pflogsumm-1.1.5.tar.gz) = 994d660692dfea38a1dd9866d15f15035657e85131c1f5a2cd82baa5bd4ad987a00939cb5233f316d2090014c52ae68ef20db0c893f8634969484e0e74678f4d
+SHA512 (postfix-3.6.2.tar.gz) = 464ce9ec77e637ede91123472a0383b2bfda52102f9e9852c7191016d4fda2e14f302f2db9793887c182688c2a14dde6eeda728523196a627a8028f99555a4d9