[Serusers] SER and MSN Configuration Help

Greetings, I'm a new SER user trying to set up a very basic SER configuration with a proxy server and two SIP clients. I'm running SER on RedHat Linux 7.3 and a pair of MSN 4.6 clients. I have set up SER with MySQL and digest authentication support (see of of message for ser.cfg) and added a handful of normal users to the ser MySQL db using serctl. The two clients can sign on and communicate with each other. However, the weirdness started after I added each client to the other's buddy list. Even though both users are online and could IM each other, only one of the users were shown as online on the other user's buddy list. The factor that determines which client is visible in a buddy list seems to be the order in which the users sign on. Another issues is that a non-existent user can login. That is, a user that does not have any entry in the ser MySQL database can still login and communicate with other users online. How do you enforce authentication? I'd also be happy to learn of any alternatives to MSN that run on either Windows of GNU/Linux. Any help you can provide would be appreciated. Thanks in advance. Best Regards, Chris B. P.S. - I did search the serusers archive using Google and it seemed that a similar question had been brought up in the past, but I found no answer. My apologies if I was too hasty in my search of the archives. --- ser.cfg --- # # $Id: ser.cfg,v 1.21.4.1 2003/11/10 15:35:15 andrei Exp $ # # simple quick-start config script # # ----------- global configuration parameters ------------------------ #debug=3 # debug level (cmd line: -dddddddddd) #fork=yes #log_stderror=no # (cmd line: -E) /* Uncomment these lines to enter debugging mode debug=7 fork=no log_stderror=yes */ 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 ---------------------------------- # Uncomment this if you want to use SQL database loadmodule "/usr/lib/ser/modules/mysql.so" loadmodule "/usr/lib/ser/modules/sl.so" loadmodule "/usr/lib/ser/modules/tm.so" loadmodule "/usr/lib/ser/modules/rr.so" loadmodule "/usr/lib/ser/modules/maxfwd.so" loadmodule "/usr/lib/ser/modules/usrloc.so" loadmodule "/usr/lib/ser/modules/registrar.so" # Uncomment this if you want digest authentication # mysql.so must be loaded ! loadmodule "/usr/lib/ser/modules/auth.so" loadmodule "/usr/lib/ser/modules/auth_db.so" # ----------------- setting module-specific parameters --------------- # -- usrloc params -- #modparam("usrloc", "db_mode", 0) # Uncomment this if you want to use SQL database # for persistent storage and comment the previous line modparam("usrloc", "db_mode", 2) # -- auth params -- # Uncomment if you are using auth module # modparam("auth_db", "calculate_ha1", yes) # # If you set "calculate_ha1" parameter to yes (which true in this config), # uncomment also the following parameter) # modparam("auth_db", "password_column", "password") # -- rr params -- # add value to ;lr param to make some broken UAs happy modparam("rr", "enable_full_lr", 1) # ------------------------- request routing logic ------------------- # main routing logic route{ # initial sanity checks -- messages with # max_forwards==0, or excessively long requests if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); break; }; if ( msg:len > max_len ) { sl_send_reply("513", "Message too big"); break; }; # we record-route all messages -- to make sure that # subsequent messages will go through our proxy; that's # particularly good if upstream and downstream entities # use different transport protocol record_route(); # loose-route processing if (loose_route()) { t_relay(); break; }; # 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=~"team3") { if (method=="REGISTER") { # Uncomment this if you want to use digest authentication if (!www_authorize("team3", "subscriber")) { www_challenge("team3", "0"); break; }; 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; use stateful forwarding; that # works reliably even if we forward from TCP to UDP if (!t_relay()) { sl_reply_error(); }; }