The SIP_DOMAIN is only used for serctl as default domain (when you create a new user without specifiying the domain of the SIP AoR). You can specify the domain for which ser is responsibly (== myself) by using the alias=... parameter in ser.cfg, e.g.: alias=foo.com bar.com iptel.org mysipproxy.com Then you can verify using e.g. if (uri == myself) ... Another approach is using the domain module. Then the domains are stored in a DB table and you can add/delete domains without restarting ser. Then you have to use the functions provided my the domain module, e.g. if (is_uri_host_local()) ... regards klaus George Lambson wrote: