Can some one help even when I try from the CLI tool: serctl alias add newman sip:newman@<domain> sip:newman@<domain> 400 Table 'aliases' not found in memory, use save("aliases") or lookup("aliases" ) in the configuration script first And I do have the alias configured under the CFG file! # All REGISTER attempts are processed and must always be authenticated if (method=="REGISTER") { # make sure that users don't register infinite loops if (search("^(Contact|m): .*(a)(10\.1\.2\.3|(proxy\.)?bigu\.edu)&quot;)) { log(1, "LOG: alert: someone trying to set aor==contact\n"); sl_send_reply("476", "No Server Address in Contacts Allowed" ); break; }; # challenge/response if (!www_authorize("<Domain>", "subscriber")) { www_challenge("<Domain>", "0"); break; }; # only registered users are allowed if (!is_user("replicator") & !check_to()) { log(1, "LOG: unregistered user registration attempt\n"); sl_send_reply("403", "Only registered users are allowed"); break; }; # it is an authenticated request, update Contact database now if (!save("location")) { sl_reply_error(); }; break; }; # process traffic local to BigU and the PSTN # Find the canonical username lookup("aliases"); Shiran Guez