diff --git a/cron/purge.sh b/cron/purge.sh
new file mode 100755
index 0000000..6f06586
--- /dev/null
+++ b/cron/purge.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+#Gnieark https://blog-du-grouik.tinad.fr 2017 
+#GNU GPL V2 license
+#inactivate alias olders than on 
+MYSQLPATH="/usr/bin/mysql"
+MYSQLDB="postfix"
+MYSQLUSER="postfix"
+MYSQLPWD="******"
+TTL="3600"
+
+$MYSQLPATH -u $MYSQLDB -p$MYSQLPWD << EOF
+  UPDATE alias
+  SET active='0'
+  WHERE DOMAIN='tinad.fr'
+  AND active = '1'
+  AND created < (UNIX_TIMESTAMP() - $TTL)
+  AND temporary='1';
+EOF
diff --git a/execute/genalias.sh b/execute/genalias.sh
new file mode 100755
index 0000000..5fa7293
--- /dev/null
+++ b/execute/genalias.sh
@@ -0,0 +1,73 @@
+#!/bin/bash
+#Gnieark https://blog-du-grouik.tinad.fr 2017 
+#GNU GPL V2 license
+#
+#This script generate the random alias: Create it on postfix bdd
+#
+#First and only param is the mail "GOTO"
+
+
+if [ -z "$1" ]
+  then
+    echo "Error, argument missing. usage: $0 mail@domaine.com"
+    exit 2
+fi
+
+MYSQLPATH="/usr/bin/mysql"
+MYSQLDB="postfix"
+MYSQLUSER="postfix"
+MYSQLPWD="******"
+OPENSSLPATH="/usr/bin/openssl"
+DOMAIN="tinad.fr"
+LOGGERPATH="/usr/bin/logger"
+#escape mail:
+printf -v MAIL "%q" "$1"
+
+#Check if the sender is already knowed on the database
+EXISTS=`$MYSQLPATH -B -u $MYSQLUSER -p$MYSQLPWD -D $MYSQLDB --disable-column-names -e "SELECT count(*) FROM alias WHERE goto='$MAIL'"`
+
+if [ $EXISTS -eq 0 ]; then
+  #unknowed user *************************************************
+  #Generate random string for the alias. If already exists, retry.
+  COUNT=1
+  while [  $COUNT -gt 0 ]; do
+    #gererate random
+    RD=$($OPENSSLPATH rand -base64 8)
+    #Delete = char at the end of string
+    PART=${RD::-1}
+    COUNT=`$MYSQLPATH -B -u $MYSQLUSER -p$MYSQLPWD -D $MYSQLDB --disable-column-names -e "SELECT count(*) FROM alias WHERE address='$PART@$DOMAIN'"`
+  done
+  ALIASFULL=$PART@$DOMAIN
+
+#Feed the database
+$MYSQLPATH -u $MYSQLUSER -p$MYSQLPWD  $MYSQLDB << EOF
+  INSERT INTO alias(address,goto,domain,created,modified,active,temporary) VALUES
+  ('$PART@$DOMAIN',
+  '$MAIL',
+  '$DOMAIN',
+  NOW(),
+  NOW(),
+  '1',
+  '1'
+  );
+EOF
+
+else 
+#user is already knowed, simply reactivate his alias************
+$MYSQLPATH -u $MYSQLUSER -p$MYSQLPWD  $MYSQLDB << EOF
+  UPDATE alias SET
+    modified=NOW(),
+    active='1'
+  WHERE goto='$MAIL'
+  AND temporary='1';
+EOF
+#get his alias
+ALIASFULL=`$MYSQLPATH -B -u $MYSQLUSER -p$MYSQLPWD -D $MYSQLDB --disable-column-names -e "SELECT address FROM alias WHERE goto='$MAIL'"`
+ 
+fi
+
+printf "Hi, Your requested alias is $ALIASFULL, You will receive all mails sending to this alias during one hour from now. Thanks for using this service."
+
+$LOGGERPATH -i -p genalias.info "Activate alias $ALIASFULL FOR $MAIL"
+exit 0	
+
diff --git a/global.sieve b/global.sieve
new file mode 100644
index 0000000..b645b7c
--- /dev/null
+++ b/global.sieve
@@ -0,0 +1,14 @@
+require ["vnd.dovecot.execute","variables","fileinto", "envelope", "subaddress","vacation","vacation-seconds"];
+if envelope :detail "to" "spam"{
+  fileinto "Spam";
+}
+if header :contains ["to", "cc"]
+ [
+  "alias@tinad.fr"
+ ]{
+  if address :matches "from" "*" { set "from" "${1}"; }
+  if execute :output "response" "genalias.sh" [ "${from}" ]{
+    vacation :seconds 1801 "${response}";
+  }
+}
+