Some help on USERMAPPING feature

Hello, my friends. Informix 11.70.FC3 on a linux_64 machine (redhat based). I´m trying to test the USERMAPPING feature, with the BASIC option. As said by Information Center, my release doesn´t need to have PAM authentication to do this (after 11.70.xC1 I read). Ok, so I did the steps below: 1) I changed my USERMAPPING=BASIC 2) I´ve created my /etc/informix/allowed.surrogates file, as follows: -rw-r--r-- 1 root root 44 Sep 5 09:25 /etc/informix/allowed.surrogates it´s contents: USERS:local_user,1404 GROUPS:grupo1,101 3) onmode -cache surrogates ran, as online.log says: 09:37:57 Entries in the surrogates file /etc/informix/allowed.surrogates are loaded into surrogate cache. 4) I´ve created my windows user "Amarini": grant access to "Amarini" properties UID 1404, GROUP (grupo1) But when I try to connect using my dbaccess, online.log says: 09:38:19 listener-thread: err = -951: oserr = 0: errstr = Amarini@my_machine.domain[MY_MACHINE.DOMAIN]: Incorrect password or user Amarini@my_machine.domain[MY_MACHINE.DOMAIN] is not known on the database server. (I´ve even added the following line to my /etc/hosts.equiv file) my_machine.domain But the same error appears. Am I missing something? Is there any other "cake receipt" to do this? Regards!