diff --git a/root/etc/e-smith/templates/etc/aliases/00header b/root/etc/e-smith/templates/etc/aliases/00header
new file mode 100644
index 0000000..607c91a
--- /dev/null
+++ b/root/etc/e-smith/templates/etc/aliases/00header
@@ -0,0 +1,104 @@
+#
+#  Aliases in this file will NOT be expanded in the header from
+#  Mail, but WILL be visible over networks or from /bin/mail.
+#
+#       >>>>>>>>>>      The program "newaliases" must be run after
+#       >> NOTE >>      this file is updated for any changes to
+#       >>>>>>>>>>      show through to sendmail.
+#
+{
+%aliases = (
+# SME aliases
+'root'=> admin,
+
+# Basic system aliases -- these MUST be present.
+'mailer-daemon'=>  postmaster,
+'postmaster'=>     admin, # for SME, EL default would be root
+
+# General redirections for pseudo accounts.
+'bin'=>            root,
+'daemon'=>         root,
+'adm'=>            root,
+'lp'=>             root,
+'sync'=>           root,
+'shutdown'=>       root,
+'halt'=>           root,
+'mail'=>           root,
+'news'=>           root,
+'uucp'=>           root,
+'operator'=>       root,
+'games'=>          root,
+'gopher'=>         root,
+'ftp'=>            root,
+'nobody'=>         root,
+'radiusd'=>        root,
+'nut'=>            root,
+'dbus'=>           root,
+'vcsa'=>           root,
+'canna'=>          root,
+'wnn'=>            root,
+'rpm'=>            root,
+'nscd'=>           root,
+'pcap'=>           root,
+'apache'=>         root,
+'webalizer'=>      root,
+'dovecot'=>        root,
+'fax'=>            root,
+'quagga'=>         root,
+'radvd'=>          root,
+'pvm'=>            root,
+'amandabackup'=>           root,
+'privoxy'=>        root,
+'ident'=>          root,
+'named'=>          root,
+'xfs'=>            root,
+'gdm'=>            root,
+'mailnull'=>       root,
+'postgres'=>       root,
+'sshd'=>           root,
+'smmsp'=>          root,
+'postfix'=>        root,
+'netdump'=>        root,
+'ldap'=>           root,
+'squid'=>          root,
+'ntp'=>            root,
+'mysql'=>          root,
+'desktop'=>        root,
+'rpcuser'=>        root,
+'rpc'=>            root,
+'nfsnobody'=>      root,
+'pcp'=>            root,
+
+'ingres'=>         root,
+'system'=>         root,
+'toor'=>           root,
+'manager'=>        root,
+'dumper'=>         root,
+'abuse'=>          root,
+
+'newsadm'=>        news,
+'newsadmin'=>      news,
+'usenet'=>         news,
+'ftpadm'=>         ftp,
+'ftpadmin'=>       ftp,
+'ftp-adm'=>        ftp,
+'ftp-admin'=>      ftp,
+'www'=>            webmaster,
+'webmaster'=>      root,
+'noc'=>            root,
+'security'=>       root,
+'hostmaster'=>     root,
+'info'=>           postmaster,
+'marketing'=>      postmaster,
+'sales'=>          postmaster,
+'support'=>        postmaster,
+
+
+# trap decode to catch security attacks
+'decode'=>         root,
+
+# Person who should get root,'s mail
+#'root'=>          marc
+);
+$OUT ="";
+}
diff --git a/root/etc/e-smith/templates/etc/aliases/10aliases b/root/etc/e-smith/templates/etc/aliases/10aliases
new file mode 100644
index 0000000..12c9287
--- /dev/null
+++ b/root/etc/e-smith/templates/etc/aliases/10aliases
@@ -0,0 +1,16 @@
+{
+use esmith::AccountsDB;
+my $adb = esmith::AccountsDB->open_ro or die "Couldn't open AccountsDB";
+#$hum=$adb->users;
+my @users= map { $_->{key} } ( $adb->users,$adb->pseudonyms,$adb->groups,$adb->get_all_by_prop(type=>"system"),$adb->get_all_by_prop(type=>"ibay")  );
+# do we want ibays, reserved, url, printers ?
+#$OUT .= join(", ", @users), "\n";
+
+my @sorted_keys = sort keys %aliases;
+foreach my $key (@sorted_keys) {
+    $OUT .= "# $key in SME Server accounts db, ignoring " if (grep { $_ eq $key } @users); #if (grep { /$key/ } @users);
+    $OUT .= "$key: $aliases{$key}\n";
+}
+
+
+}
diff --git a/root/etc/e-smith/templates/etc/postfix/main.cf/62delaywarn b/root/etc/e-smith/templates/etc/postfix/main.cf/62delaywarn
new file mode 100644
index 0000000..a452479
--- /dev/null
+++ b/root/etc/e-smith/templates/etc/postfix/main.cf/62delaywarn
@@ -0,0 +1,4 @@
+{
+  my $DelayWarningTime = $postfix{'DelayWarningTime'} || "0h";
+  $OUT = "delay_warning_time = $DelayWarningTime\n";
+}
diff --git a/smeserver-postfix.spec b/smeserver-postfix.spec
index 658e040..dbc326f 100644
--- a/smeserver-postfix.spec
+++ b/smeserver-postfix.spec
@@ -1,6 +1,6 @@
 %define name smeserver-postfix
 %define version 1.0
-%define release 11
+%define release 12
 Summary: This is what smeserver-postfix does.
 Name: %{name}
 Version: %{version}
@@ -24,6 +24,10 @@ AutoReqProv: no
 Koozali SME Server wrapper to configure postfix
 
 %changelog
+* Sun Nov 02 2025 Jean-Philippe Pialasse <jpp@koozali.org> 1.0-12.sme
+- template /etc/aliases [SME: 13262]
+- implement postfix delayed delivery notifications [SME: 12854]
+
 * Wed Jan 08 2025 Brian Read <brianr@koozali.org> 1.0-11.sme
 - reload-or-restart postfix after pseudonym change [SME: 12863]