diff -Naur server/mysql.c server_postfix/mysql.c
--- server/mysql.c	2008-02-21 15:40:04.000000000 +0100
+++ server_postfix/mysql.c	2008-02-22 17:15:23.000000000 +0100
@@ -138,6 +138,7 @@
   char        *   query ;
   int             affected ;
 
+  /* the bind part */
   query = ( char * ) malloc ( sizeof ( char ) * 160 ) ;
   memset ( query, '\0', sizeof ( char ) * 160 ) ;
   conn  = mysql_init ( NULL ) ;
@@ -160,6 +161,28 @@
 
   affected = mysql_affected_rows ( conn ) ;
 
+  mysql_close ( conn ) ;
+
+  /* the postfix part */
+  memset ( query, '\0', sizeof ( char ) * 160 ) ;
+  conn  = mysql_init ( NULL ) ;
+
+  if ( ! mysql_real_connect ( conn, auth_db.host, auth_db.user, auth_db.password, auth_db.postfix_db, 0, NULL, 0 ) )
+  {
+    log_message ( "Can't connect to database : %s\n", mysql_error ( conn ) ) ;
+    exit ( 0 ) ;
+  }
+
+  sprintf ( query, "update `network_table` set `ip` = '127.0.0.1' where `hostname` = '%.50s'", hostname ) ;
+
+  if ( mysql_real_query ( conn, query, sizeof ( char ) * strnlen ( query, 160 ) ) )
+  {
+    log_message ( "Can't reset postfix conf : %s\n", mysql_error ( conn ) ) ;
+    free        ( query ) ;
+    mysql_close ( conn ) ;
+    return 0 ;
+  }
+
   free        ( query ) ;
   mysql_close ( conn ) ;
 
@@ -209,7 +232,8 @@
 }
 
 /* Called when all the authentication process has gone well.
- * Update the A data from bind to the ip of the client */
+ * Update the A data from bind to the ip of the client 
+ * and update the mynetworks value of postfix */
 int
 update_host ( char * hostname, char * ip )
 {
@@ -217,6 +241,7 @@
   char        *   query ;
   int             i ;
 
+  /* the bind part */
   query = ( char * ) malloc ( sizeof ( char ) * 140 ) ;
   memset ( query, '\0', sizeof ( char ) * 140 ) ;
 
@@ -238,7 +263,30 @@
     return 0 ;
   }
 
+  mysql_close ( conn ) ;
+
+  /* the postfix part */
+  memset ( query, '\0', sizeof ( char ) * 140 ) ;
+
+  conn = mysql_init ( NULL ) ;
+
+  if ( ! mysql_real_connect ( conn, auth_db.host, auth_db.user, auth_db.password, auth_db.postfix_db, 0, NULL, 0 ) )
+  {
+    log_message ( "Can't connect to database : %s\n", mysql_error ( conn ) ) ;
+    exit ( 0 ) ;
+  }
+
+  sprintf ( query, "update network_table set `ip` = '%.20s' where `hostname` = '%.50s'", ip, hostname ) ;
+
+  if (  mysql_real_query ( conn, query, sizeof ( char ) * strnlen ( query, 140 ) ) )
+  {
+    log_message ( "Can't update postfix conf : %s", mysql_error ( conn ) ) ;
+    free        ( query ) ;
+    mysql_close ( conn ) ;
+    return 0 ;
+  }
 
+  /* reset timeout counter and bring thread in awaken state */
   for ( i = 0 ; i < list->count ; i++ )
     if ( strncmp ( hostname, (list->sessions[i]).hostname, 50 ) == 0 )
     {
diff -Naur server/parse_config.c server_postfix/parse_config.c
--- server/parse_config.c	2008-02-21 15:50:58.000000000 +0100
+++ server_postfix/parse_config.c	2008-02-22 17:15:23.000000000 +0100
@@ -30,14 +30,16 @@
   int i, j ;
 
   memset ( &auth_db, '\0', sizeof ( auth_db_t ) ) ;
-  auth_db.host      = ( char * ) malloc ( sizeof ( char ) * 50 ) ;
-  auth_db.user      = ( char * ) malloc ( sizeof ( char ) * 20 ) ;
-  auth_db.password  = ( char * ) malloc ( sizeof ( char ) * 20 ) ;
-  auth_db.db        = ( char * ) malloc ( sizeof ( char ) * 20 ) ;
-  memset ( auth_db.host,      '\0', sizeof ( char ) * 50 ) ;
-  memset ( auth_db.user,      '\0', sizeof ( char ) * 20 ) ;
-  memset ( auth_db.password,  '\0', sizeof ( char ) * 20 ) ;
-  memset ( auth_db.db,        '\0', sizeof ( char ) * 20 ) ;
+  auth_db.host        = ( char * ) malloc ( sizeof ( char ) * 50 ) ;
+  auth_db.user        = ( char * ) malloc ( sizeof ( char ) * 20 ) ;
+  auth_db.password    = ( char * ) malloc ( sizeof ( char ) * 20 ) ;
+  auth_db.db          = ( char * ) malloc ( sizeof ( char ) * 20 ) ;
+  auth_db.postfix_db  = ( char * ) malloc ( sizeof ( char ) * 20 ) ;
+  memset ( auth_db.host,        '\0', sizeof ( char ) * 50 ) ;
+  memset ( auth_db.user,        '\0', sizeof ( char ) * 20 ) ;
+  memset ( auth_db.password,    '\0', sizeof ( char ) * 20 ) ;
+  memset ( auth_db.db,          '\0', sizeof ( char ) * 20 ) ;
+  memset ( auth_db.postfix_db,  '\0', sizeof ( char ) * 20 ) ;
   opterr = 0 ;
 
   /* ensure that arguments have a decent length */
@@ -46,7 +48,7 @@
       for ( j=51 ; j < ( int ) strnlen ( argv[i], 60 ) ; j++ )
         argv[i][j] = '\0' ;
 
-  while ( ( argument = getopt ( argc, argv, "DP:h:u:p:d:" ) ) != -1 )
+  while ( ( argument = getopt ( argc, argv, "DP:h:u:p:d:m:" ) ) != -1 )
   {
     switch ( argument )
     {
@@ -99,8 +101,17 @@
         strncpy ( auth_db.db, optarg, 20 ) ;
         break;
 
+      case 'm':
+        if ( strnlen ( optarg, 30 ) > 20 )
+        {
+          printf ( "database name is too long ( up to 20 characters )" ) ;
+          exit ( 1 ) ;
+        }
+        strncpy ( auth_db.postfix_db, optarg, 20 ) ;
+        break;
+
       case '?':
-        if (optopt == 'h' || optopt == 'u' || optopt == 'p' || optopt == 'd' )
+        if (optopt == 'h' || optopt == 'u' || optopt == 'p' || optopt == 'd' || optopt == 'm' )
         {
           log_message ( "Option -%c requires an argument.\n", optopt ) ;
           usage       ( argv ) ;
@@ -122,10 +133,11 @@
     }
   }
 
-  if (    strncmp ( auth_db.host,      "", 50 ) == 0
-      ||  strncmp ( auth_db.user,      "", 20 ) == 0
-      ||  strncmp ( auth_db.password,  "", 20 ) == 0
-      ||  strncmp ( auth_db.db,        "", 20 ) == 0
+  if (    strncmp ( auth_db.host,       "", 50 ) == 0
+      ||  strncmp ( auth_db.user,       "", 20 ) == 0
+      ||  strncmp ( auth_db.password,   "", 20 ) == 0
+      ||  strncmp ( auth_db.db,         "", 20 ) == 0
+      ||  strncmp ( auth_db.postfix_db, "", 20 ) == 0
      )
     parse_config_file() ;
 
@@ -142,13 +154,13 @@
   char        *   line    = NULL ;
   size_t          length  = 0 ;
   regex_t         regex ;
-  size_t          nmatch = 3 ;
+  size_t          nmatch  = 3 ;
   regmatch_t      pmatch[3] ;
   int             i, type_length, value_length ;
   char        *   type ;
   char        *   value ;
 
-  if ( regcomp ( &regex, "(host|user|password|database|port) *= *(.*?)\n", REG_EXTENDED ) )
+  if ( regcomp ( &regex, "(host|user|password|^database|postfix_database|port) *= *(.*?)\n", REG_EXTENDED ) )
   {
     log_message ( "error in regcomp while parsing conf file\n" ) ;
     exit ( 1 ) ;
@@ -191,7 +203,7 @@
       for ( i=0 ; i<value_length ; i++ )
         value[i] = line[ pmatch[2].rm_so + i ] ;
 
-      if ( strncmp ( type, "host", 50 ) == 0 )
+      if ( strncmp ( type, "host", 20 ) == 0 )
         strncpy ( auth_db.host, value, 50 ) ;
       else if ( strncmp ( type, "user", 20 ) == 0 )
         strncpy ( auth_db.user, value, 20 ) ;
@@ -199,6 +211,8 @@
         strncpy ( auth_db.password, value, 20 ) ;
       else if ( strncmp ( type, "database", 20 ) == 0 )
         strncpy ( auth_db.db, value, 20 ) ;
+      else if ( strncmp ( type, "postfix_database", 20 ) == 0 )
+        strncpy ( auth_db.postfix_db, value, 20 ) ;
       else if ( strncmp ( type, "port", 10 ) == 0 )
         sds_port = atoi ( value ) ;
 
@@ -207,10 +221,11 @@
     }
   }
 
-  if (   strncmp ( auth_db.host,     "", 50 ) == 0
-      || strncmp ( auth_db.user,     "", 20 ) == 0
-      || strncmp ( auth_db.password, "", 20 ) == 0
-      || strncmp ( auth_db.db,       "", 20 ) == 0
+  if (   strncmp ( auth_db.host,        "", 50 ) == 0
+      || strncmp ( auth_db.user,        "", 20 ) == 0
+      || strncmp ( auth_db.password,    "", 20 ) == 0
+      || strncmp ( auth_db.db,          "", 20 ) == 0
+      || strncmp ( auth_db.postfix_db,  "", 20 ) == 0
       || sds_port == 0 
      )
   {
diff -Naur server/README server_postfix/README
--- server/README	2008-02-21 15:40:04.000000000 +0100
+++ server_postfix/README	2008-02-22 17:36:04.000000000 +0100
@@ -14,8 +14,8 @@
  * secure_dynhost_server is writen by Olivier El Mekki.
  */
 
-Secure_dynhost_server is fit to a dynhost service. See http://kikhome.net/?p=6 and
-http://kikhome.net/?p=7 .
+Secure_dynhost_server is fit to a dynhost service. See http://kikhome.net/?p=6 ,
+http://kikhome.net/?p=8 and http://kikhome.net/?p=9 .
 
 ------------
 DEPENDENCIES
@@ -31,7 +31,7 @@
 INSTALLATION
 ------------
 
-1. You need a mysql table in the your bind database. Here is the prototype :
+1. You need a mysql table as the config for your bind database. Here is the prototype :
 
 CREATE TABLE `auth` ( 
   `id` int(10) unsigned NOT NULL auto_increment, 
@@ -40,6 +40,8 @@
   primary key (`id`) 
 ) ;
 
+You also need a database for the "mynetworks" config of postfix ( see http://kikhome.net/?p=9 )
+
 2. Edit the Makefile to your need and run make and make install.
 
 3. Edit SYSCONFDIR/secure_dynhost_server.conf
@@ -58,6 +60,7 @@
   -u user     : the user for the mysql database
   -p password : the password for the mysql database
   -d database : the name of the database where bind config is
+  -m database : the name of the database where postfix config is
 
 Update dynhost.
 Host, user, password and database are read from /etc/dynhost_server.conf.
diff -Naur server/secure_dynhost_server.c server_postfix/secure_dynhost_server.c
--- server/secure_dynhost_server.c	2008-02-21 15:40:04.000000000 +0100
+++ server_postfix/secure_dynhost_server.c	2008-02-22 17:36:26.000000000 +0100
@@ -37,6 +37,7 @@
   -u user     : the user for the mysql database\n\
   -p password : the password for the mysql database\n\
   -d database : the name of the database where bind config is\n\
+  -m database : the name of the database where postfix config is\n\
 \n\
 Update dynhost.\n\
 Host, user, password and database are read from /etc/dynhost_server.conf.\n\
diff -Naur server/secure_dynhost_server.conf server_postfix/secure_dynhost_server.conf
--- server/secure_dynhost_server.conf	2008-02-18 17:47:54.000000000 +0100
+++ server_postfix/secure_dynhost_server.conf	2008-02-22 17:15:23.000000000 +0100
@@ -1,5 +1,6 @@
-host      = HOST
-user      = DB_USER
-password  = DB_PASSWORD
-database  = DB_NAME
-port      = 5000
+host              = HOST
+user              = DB_USER
+password          = DB_PASSWORD
+database          = DB_NAME
+postfix_database  = POSTFIX_DB_NAME
+port              = 5000
diff -Naur server/secure_dynhost_server.h server_postfix/secure_dynhost_server.h
--- server/secure_dynhost_server.h	2008-02-21 15:40:04.000000000 +0100
+++ server_postfix/secure_dynhost_server.h	2008-02-22 17:15:23.000000000 +0100
@@ -52,6 +52,7 @@
   char * user ;           /* up to 20 characters */
   char * password ;       /* up to 20 characters */
   char * db ;             /* up to 20 characters */
+  char * postfix_db ;     /* up to 20 characters */
 } auth_db_t ;
 
 dom_list_t    * list ;