[Serusers] SER with Windows-Messenger in different subnets

Hello all, we have a SIP Express Router located in 172.16.0.0/16 and several Windows Messenger clients, located in the same subnet as well, as in 192.168.190.0/24. All clients can establish successfully connections to other clients in the first subnet, but connections to clients in the second subnet end with "404 Not Found". The behaviour is very strange, since I got it to work with some clients in the second subnet, but then after a restart of the SER process it didn't work again. I definitely have changed nothing! Here is the conf file: # $Id: ser.cfg,v 1.11 2002/10/04 21:40:31 jiri Exp $ # ----------- global configuration parameters ------------------------ debug=3 # debug level (cmd line: -dddddddddd) fork=yes log_stderror=yes# (cmd line: -E) check_via=no # (cmd. line: -v) dns=no # (cmd. line: -r) rev_dns=no # (cmd. line: -R) port=5060 children=4 fifo="/tmp/ser_fifo" # ------------------ module loading ---------------------------------- loadmodule "/usr/local/lib/ser/modules/sl.so" loadmodule "/usr/local/lib/ser/modules/print.so" loadmodule "/usr/local/lib/ser/modules/tm.so" loadmodule "/usr/local/lib/ser/modules/rr.so" loadmodule "/usr/local/lib/ser/modules/maxfwd.so" loadmodule "/usr/local/lib/ser/modules/usrloc.so" loadmodule "/usr/local/lib/ser/modules/registrar.so" # ----------------- setting module-specific parameters --------------- # -- usrloc params -- modparam("usrloc", "db_mode", 0) # ------------------------- request routing logic ------------------- # main routing logic route{ # initial sanity checks -- messages with # max_forwars==0, or excessively long requests if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); break; }; if (len_gt( max_len )) { sl_send_reply("513", "Message too big"); break; }; # Do strict routing if pre-loaded route headers present rewriteFromRoute(); # if the request is for other domain use UsrLoc # (in case, it does not work, use the following command # with proper names and addresses in it) if (uri=~"sip.####.de") { if (method=="REGISTER") { save("location"); break; }; # native SIP destinations are handled using our USRLOC DB if (!lookup("location")) { sl_send_reply("404", "Not Found"); break; }; }; # forward to current uri now if (!t_relay()) { sl_reply_error(); }; } Thanks, Hendrik Utsch Dipl.-Ing. (FH) Systemtechnik eMail: hendrik.utsch(a)tecsphere.com TecSphere AG Standort Köln Claudiastraße 2b D-51149 Köln Deutschland Fon: +49 (2203) 89 11 506 Fax: +49 (2203) 89 11 111 http://www.tecsphere.com