diff --git a/README.md b/README.md
index 33165ba..cb3e0dc 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,29 @@
 # trash-email-alias
-a dovecot sieve 's script and configuration to generate random alias
+a dovecot sieve 's script and configuration to generate a temporary random alias
 
 # usage
 Just send an email to the configured em-mail generator. It will respond you and indicate what is your alias.
+You can test it by sending a mail to [ getalias Arobaze tinad.fr ]
+
 # Configure
 
-Need dovecot and dovecot pigeon hole.
+You need an e-mail server with dovecot and sieve. The mail box  structure is the classical one.
+Add a colomn named "temporary" type Boolean, default 0 to the table alias. So alias table structure is:
+
++-----------+--------------+------+-----+---------------------+-------+
+| Field     | Type         | Null | Key | Default             | Extra |
++-----------+--------------+------+-----+---------------------+-------+
+| address   | varchar(255) | NO   | PRI |                     |       |
+| goto      | text         | NO   |     | NULL                |       |
+| domain    | varchar(255) | NO   |     |                     |       |
+| created   | datetime     | NO   |     | 0000-00-00 00:00:00 |       |
+| modified  | datetime     | NO   |     | 0000-00-00 00:00:00 |       |
+| active    | tinyint(1)   | NO   |     | 1                   |       |
+| temporary | tinyint(1)   | NO   |     | 0                   |       |
++-----------+--------------+------+-----+---------------------+-------+
+
+
+
 On /etc/dovecot/dovecot.conf my plugin section looks like:
 
       plugin {
@@ -29,4 +47,8 @@ On /etc/dovecot/dovecot.conf my plugin section looks like:
 	(...)
       }
 
+ Change your mysql credentials on  cron/purge.sh and execute/genalias.sh
+ In my case, this files are owned by the unix user "dovecot".
+ 
+ Add purge.sh on your crontab. Evrey 10 minutes is enougth.
  
\ No newline at end of file
diff --git a/cron/purge.sh b/cron/purge.sh
index 6f06586..ef40068 100755
--- a/cron/purge.sh
+++ b/cron/purge.sh
@@ -6,9 +6,12 @@ MYSQLPATH="/usr/bin/mysql"
 MYSQLDB="postfix"
 MYSQLUSER="postfix"
 MYSQLPWD="******"
+LOGGERPATH="/usr/bin/logger"
+LOGFILE="/var/log/genalias.log"
+
 TTL="3600"
 
-$MYSQLPATH -u $MYSQLDB -p$MYSQLPWD << EOF
+$MYSQLPATH -u $MYSQLUSER -p$MYSQLPWD $MYSQLDB<< EOF
   UPDATE alias
   SET active='0'
   WHERE DOMAIN='tinad.fr'
@@ -16,3 +19,6 @@ $MYSQLPATH -u $MYSQLDB -p$MYSQLPWD << EOF
   AND created < (UNIX_TIMESTAMP() - $TTL)
   AND temporary='1';
 EOF
+
+$LOGGERPATH -s "Inactivate temporary alias older than 1 hour" 2> $LOGFILE
+exit 0
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diff --git a/execute/genalias.sh b/execute/genalias.sh
index 5fa7293..c5c5a8c 100755
--- a/execute/genalias.sh
+++ b/execute/genalias.sh
@@ -20,6 +20,8 @@ MYSQLPWD="******"
 OPENSSLPATH="/usr/bin/openssl"
 DOMAIN="tinad.fr"
 LOGGERPATH="/usr/bin/logger"
+LOGFILE="/var/log/genalias.log"
+
 #escape mail:
 printf -v MAIL "%q" "$1"
 
@@ -67,7 +69,5 @@ ALIASFULL=`$MYSQLPATH -B -u $MYSQLUSER -p$MYSQLPWD -D $MYSQLDB --disable-column-
 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 $MAIL"
-exit 0	
-
+$LOGGERPATH -s "Activate alias $ALIASFULL FOR $MAIL" 2> $LOGFILE
+exit 0	
\ No newline at end of file