[Users] openser2openser

Situation: client1 ----->openser1 ----> openser2 ---->client2 Both openser have same accounts (user/pass) When im not using proxy authentification it works ok. If i use it it gives me 407 i have tried to use following http://www.voice-system.ro/docs/uac/ar01s06.html#ex_auth and always goes executing this part if (isflagset(7)) { t_reply("503","Authentication failed"); break; } I look at ngrep log, and it is some thing like this ser1 -> ser2 INVITE ser2 -> ser1 AUTH Required ser1 -> ser2 INVITE with auth ser2 -> ser1 AUTH Required ser1 -> ser2 INVITE with auth ser2 -> ser1 AUTH Required It seems to me that openser1 cannot authentificate on openser2. Thanks in advance