Postfix não entrega os emails

Olá Pessoal,

Estou com problemas na entrega das mensagens com o postfix-2.1.5-5.

Configurações:
################## main.cf ##################
arquivo default alterado os parametros abaixo.

myhostname = mail.network.ctbc
mydomain = network.ctbc
myorigin = $mydomain
inet_interfaces = localhost
mydestination = $myhostname, localhost.$mydomain, localhost
relay_domains = $mydestination

virtual_mailbox_domains = network.ctbc

virtual_mailbox_base = /var/spool/vbox
virtual_mailbox_maps = hash:/etc/postfix/conf/vmaps
virtual_uid_maps = static:8 #-------> usuario mail
virtual_gid_maps = static:12 #-------> grupo mail
virtual_alias_maps = hash:/etc/postfix/conf/valias
################## main.cf ##################

obs:
[root@usrv32 rogeriofr]# more /etc/passwd | grep mail
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin

################## vmaps.cf ##################
[email protected] network.ctbc/rogeriofr/
################## vmaps.cf ##################

Obs: foi rodado o comando postmap vmaps, postmap valias para geração do arquivo hash

[root@usrv32 rogeriofr]# pwd
/var/spool/vbox/network.ctbc/rogeriofr
[root@usrv32 rogeriofr]# la -la
drwxr-xr-x 5 mail mail 4096 May 14 14:01 .
drwxr-xr-x 3 mail mail 4096 May 14 14:01 ..
drwx------ 2 mail mail 4096 May 14 14:01 cur
drwx------ 2 mail mail 4096 May 14 14:01 new
drwx------ 2 mail mail 4096 May 14 14:01 tmp

Teste de Envio de email:
[root@usrv32 rogeriofr]# echo "ENVIO EMAIL" | mail -s "FOSTFIX" [email protected]

Erro: /var/mail/maillog
May 14 15:54:19 usrv32 postfix/qmgr[14401]: 834C2209E22: from=<[email protected]>, size=567, nrcpt=1 (queue active)
May 14 15:54:19 usrv32 postfix/qmgr[14401]: E50A0209E13: from=<[email protected]>, size=567, nrcpt=1 (queue active)
May 14 15:54:19 usrv32 postfix/virtual[15020]: 834C2209E22: to=<[email protected]>, relay=virtual, delay=3576, status=deferred (recipient [email protected]: bad uid 8 in virtual_uid_maps)
May 14 15:54:19 usrv32 postfix/virtual[15021]: E50A0209E13: to=<[email protected]>, relay=virtual, delay=1829, status=deferred (recipient [email protected]: bad uid 8 in virtual_uid_maps)

Alguem pode me ajudar?