error en postfix

[Fancisco Torrez]

hola, tratando de configurar postfix+cyrus-imapd+mysql, he logarado
avanzar algo, pero tengo problemas cuando quiero enviar correos, en
realidad cuando hago uso de un cliente (thunderbird) el mensaje sale
sin inconvenientes, pero el mensjae no llega aa destinatario (que es
la misma cuenta, osea pruebo de enviar un mensjae a si mismo, uso la
cuenta postmaster), tambien hice la prueba desde squirrelmail y con
este tambien pasa lo mismo, el el log tengo lo siguiente:

 la conecion de imap al aprecer esta ok
=======================================
Jan 16 12:17:15 svrmail master[31339]: process 32134 exited, status 0
Jan 16 12:20:08 svrmail master[32143]: about to exec /usr/lib/cyrus-imapd/imapd
Jan 16 12:20:08 svrmail imap[32109]: accepted connection
Jan 16 12:20:08 svrmail imap[32143]: executed
Jan 16 12:20:11 svrmail imap[32109]: login: [192.168.111.22]
postmaster plaintext User logged in
Jan 16 12:20:11 svrmail imap[32109]: seen_db: user postmaster opened
/var/lib/imap/user/p/postmaster.seen
Jan 16 12:20:11 svrmail imap[32109]: open: user postmaster opened INBOX

este es la parte en el envio
============================

Jan 16 12:04:50 svrmail postfix/cleanup[32060]: E9806C90091:
message-id=<35689.192.168.111.22.1200499490.squirrel en webmail.xxx.yyy.ab>
Jan 16 12:04:51 svrmail postfix/qmgr[31958]: E9806C90091:
from=<postmaster en localhost.xxx.yyy.ab>, size=787, nrcpt=1 (queue
active)
Jan 16 12:04:51 svrmail imap[31706]: accepted connection
Jan 16 12:04:51 svrmail postfix/smtpd[32057]: disconnect from
svrmail.fps.gov.bo[127.0.0.1]
Jan 16 12:04:51 svrmail imap[31706]: login: svrmail.xxx.yyy.ab
[127.0.0.1] postmaster plaintext User logged in
Jan 16 12:04:51 svrmail master[32066]: about to exec /usr/lib/cyrus-imapd/lmtpd
Jan 16 12:04:51 svrmail lmtpunix[32003]: accepted connection
Jan 16 12:04:51 svrmail lmtpunix[32003]: lmtp connection preauth'd as postman
Jan 16 12:04:51 svrmail lmtpunix[32066]: executed
Jan 16 12:04:51 svrmail lmtpunix[32003]: verify_user(user.root)
failed: Mailbox does not exist
Jan 16 12:04:51 svrmail postfix/pipe[32064]: E9806C90091:
to=<root en xxx.yyy.ab>, orig_to=<postmaster en xxx.yyy.ab>, relay=cyrus,
delay=0.1, delays=0.05/0.02/0/0.03, dsn=5.6.0, status=bounced (data
format error. Command output: root: Mailbox does not exist )
Jan 16 12:04:51 svrmail postfix/cleanup[32060]: 0CD6FC90376:
message-id=<20080116160451.0CD6FC90376 en svrmail.xxx.yyy.ab>
Jan 16 12:04:51 svrmail postfix/qmgr[31958]: 0CD6FC90376: from=<>,
size=2717, nrcpt=1 (queue active)
Jan 16 12:04:51 svrmail postfix/bounce[32067]: E9806C90091: sender
non-delivery notification: 0CD6FC90376
Jan 16 12:04:51 svrmail postfix/qmgr[31958]: E9806C90091: removed
Jan 16 12:04:51 svrmail lmtpunix[32003]: accepted connection
Jan 16 12:04:51 svrmail lmtpunix[32003]: lmtp connection preauth'd as postman
Jan 16 12:04:51 svrmail lmtpunix[32003]: verify_user(user.root)
failed: Mailbox does not exist
Jan 16 12:04:51 svrmail imap[31706]: seen_db: user postmaster opened
/var/lib/imap/user/p/postmaster.seen
Jan 16 12:04:51 svrmail postfix/pipe[32064]: 0CD6FC90376:
to=<root en xxx.yyy.ab>, orig_to=<postmaster en localhost.xxx.yyy.ab>,
relay=cyrus, delay=0.02, delays=0/0/0/0.01, dsn=5.6.0, status=bounced
(data format error. Command output: root: Mailbox does not exist )



no se cual pueda ser el problema, me podrian colaborar