[Serusers] voice mail problem on alias

Hi I am implementing voice mail using ser and sems, ser 0.9.2 and latesr sems from cvs. I have the failure_route[x] to activate the voicemail also when i get an invite timeoute for my users. failure_route[1] { revert_uri(); rewritehostport("xxx.xxx.xxx.xxx:5090"); append_branch(); t_relay_to_udp("xxx.xxx.xxx.xxx", "5090"); } I don't have any problem when i try to leave a voice mail for an "user". On the "alias" the voicemail works fine when the user is offline, but when it is online and get a timeout sems respond with a 404 no email address for user the fact that the voicemail works on alias when it is off line push me to think the problem is into the failure_route. But I don't know what to add to get it working. Any help is welcome. Thanks Rosario