Pessoal, boa tarde!

Estou com o seguinte problema:
Não estou conseguindo utilizar o smtp para envio de email, configurei uma conta 
no Microsoft Outlook, porém dá o erro abaixo (no log do mail.log); ele não 
consegue entregar o email no mailbox para o usuário:

Jul 31 16:57:38 DebianLXTeste02 postfix/smtpd[8876]: connect from 
srvmsc02.col[172.16.65.3]
Jul 31 16:57:38 DebianLXTeste02 postfix/smtpd[8876]: 92805422AE: 
client=srvmsc02.col[172.16.65.3]
Jul 31 16:57:38 DebianLXTeste02 postfix/cleanup[8879]: 92805422AE: 
message-id=<[EMAIL PROTECTED]>
Jul 31 16:57:38 DebianLXTeste02 postfix/qmgr[8721]: 92805422AE: from=<[EMAIL 
PROTECTED]>, size=4668, nrcpt=1 (queue active)
Jul 31 16:57:38 DebianLXTeste02 postfix/pipe[8880]: 92805422AE: to=<[EMAIL 
PROTECTED]>, relay=maildrop, delay=0.23, delays=0.1/0.05/0/0.08, dsn=5.1.1, 
status=bounced (user unknown. Command output: ERR: authdaemon: s_connect() 
failed: Permission denied Invalid user specified. )
Jul 31 16:57:38 DebianLXTeste02 postfix/cleanup[8879]: BAB5B422B0: 
message-id=<[EMAIL PROTECTED]>
Jul 31 16:57:38 DebianLXTeste02 postfix/bounce[8882]: 92805422AE: sender 
non-delivery notification: BAB5B422B0
Jul 31 16:57:38 DebianLXTeste02 postfix/qmgr[8721]: 92805422AE: removed
Jul 31 16:57:38 DebianLXTeste02 postfix/qmgr[8721]: BAB5B422B0: from=<>, 
size=6526, nrcpt=1 (queue active)
Jul 31 16:57:38 DebianLXTeste02 postfix/pipe[8880]: BAB5B422B0: to=<[EMAIL 
PROTECTED]>, relay=maildrop, delay=0.05, delays=0.02/0/0/0.02, dsn=5.1.1, 
status=bounced (user unknown. Command output: ERR: authdaemon: s_connect() 
failed: Permission denied Invalid user specified. )
Jul 31 16:57:38 DebianLXTeste02 postfix/qmgr[8721]: BAB5B422B0: removed
Jul 31 16:57:41 DebianLXTeste02 postfix/smtpd[8876]: disconnect from 
srvmsc02.col[172.16.65.3]

Informações adicionais:
--Quando envio email através do console (para um dominio fictício em testes),  
ele entrega o emailcorretamente:
debian:/var/spool/correio/rmoraes.com/rmoraes/Maildir/new# cat 
/var/www/phpinfo.php |maildrop -d [EMAIL PROTECTED]

Eu consigo baixar através do cliente de pop3 as mensagens que eu envio 
localmente.

--O log do envio no mysql:
debian:/# tail -f /var/log/mysql/mysql.log 
100731 17:00:25     194 Connect     [EMAIL PROTECTED] on 

                    194 Init DB     postfix

                    194 Query       SELECT username, password, "", uid,
gid, home, maildir, quota, name, "" FROM mailbox WHERE username =
"[EMAIL PROTECTED]" AND (active=1)

--Abaixo eu verifiquei que ela caiu no local correto:
debian:/var/spool/correio/rmoraes.com/rmoraes/Maildir/new# ls
1280605155.M683729P8856V0000000000000306I00042297_0.debian.local.int,S=29

-- O serviço de pop3 está funcionando corretamente, ele conecta e desconecta no 
servidor normalmente (segue log abaixo):
/var/log/mail.log
Jul 31 17:10:20 DebianLXTeste02 courierpop3login: Connection, 
ip=[::ffff:172.16.65.3]
Jul 31 17:10:20 DebianLXTeste02 courierpop3login: LOGIN, [EMAIL PROTECTED], 
ip=[::ffff:172.16.65.3]
Jul 31 17:10:20 DebianLXTeste02 courierpop3login: LOGOUT, [EMAIL PROTECTED], 
ip=[::ffff:172.16.65.3], top=0, retr=0, rcvd=12, sent=39, time=0

--Estou utilizando postfix + Mysql (com 01 domínio virtual criado) + Maildrop + 
Courier-imap + Courier-pop.

-- Segue o conf do /etc/postfix (e arquivos relacionados):

/etc/postfix/main.cf
# See /usr/share/postfix/main.cf.dist for a commented, more complete version

smtpd_banner = $myhostname ESMTP FATEC
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

myhostname=debian.local.int
alias_maps=hash:/etc/aliases
alias_database=hash:/etc/aliases
myorigin=$mydomain
mydestination = $mydomain, $transport_maps
relayhost = localhost
mynetworks = 127.0.0.0/8 172.16.0.0/16
# mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
#CONFIGURACOES
queue_directory = /var/spool/postfix/
program_directory=/usr/sbin
command_directory = /usr/sbin
daemon_directory = /usr/lib/postfix
mail_owner = postfix
default_privs=nobody
default_transport=smtp
#
readme_directory = no
sample_directory = /etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
manpage_directory = /usr/local/man
newaliases_path = /usr/bin/newaliases
mailq_path = /usr/bin/mailq
disable_vrfy_command=yes
home_mailbox=Maildir/
#Nome do dominio
mydomain=fatec.int
#MYSQL
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_mailbox_base = /postfix
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_uid_maps = static:120
virtual_gid_maps = static:120
transport_maps = mysql:/etc/postfix/mysql_transport_maps.cf
#Quota
virtual_mailbox_limit_inbox = no
virtual_mailbox_limit_maps = 
mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_maildir_extended = yes
virtual_create_maildirsize = yes
virtual_mailbox_limit = 100000000
virtual_maildir_limit_message = Desculpe, o diretorio de correio do usuario 
estourou sua quota, por favor tente novamente depois.
virtual_overquota_bounce = yes
#SASL
#smtpd_sasl_auth_enable = yes
#smtpd_sasl_security_options = noanonymous
#broken_sal_auth_clients = yes
#smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, 
check_relay_domains
#MAILDROP
fallback_transport = /usr/bin/maildrop
maildrop_destination_recipient_limit = 1
unknown_local_recipient_reject_code = 450
#Finish
#Para amavis
#content_filter = smtp-amavis:[127.0.0.1]:10024

/etc/postfix/master.cf
smtp      inet  n       -       n       -       -       smtpd
#submission inet n      -       n       -       -       smtpd
#       -o smtpd_etrn_restrictions=reject
#628      inet  n       -       n       -       -       qmqpd
pickup    fifo  n       -       n       60      1       pickup
cleanup   unix  n       -       n       -       0       cleanup
qmgr      fifo  n       -       n       300     1       qmgr
#qmgr     fifo  n       -       n       300     1       oqmgr
rewrite   unix  -       -       n       -       -       trivial-rewrite
bounce    unix  -       -       n       -       0       bounce
defer     unix  -       -       n       -       0       bounce
trace     unix  -       -       n       -       0       bounce
verify    unix  -       -       n       -       1       verify
flush     unix  n       -       n       1000?   0       flush
proxymap  unix  -       -       n       -       -       proxymap
smtp      unix  -       -       n       -       -       smtp
relay     unix  -       -       n       -       -       smtp
#       -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq     unix  n       -       n       -       -       showq
error     unix  -       -       n       -       -       error
local     unix  -       n       n       -       -       local
virtual   unix  -       n       n       -       -       virtual
lmtp      unix  -       -       n       -       -       lmtp
anvil     unix  -       -       n       -       1       anvil

maildrop unix - n n - - pipe
  flags=DRhu user=maildrop argv=/usr/bin/maildrop -w 90 -d ${recipient}
uucp      unix  -       n       n       -       -       pipe
  flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
ifmail    unix  -       n       n       -       -       pipe
  flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp     unix  -       n       n       -       -       pipe
  flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -d -t$nexthop -f$sender 
$recipient
scalemail-backend unix  -       n       n       -       2       pipe
  flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} 
${user} ${extension}

# only used by postfix-tls
#tlsmgr   fifo  -       -       n       300     1       tlsmgr
#smtps    inet  n       -       n       -       -       smtpd -o 
smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes
#587      inet  n       -       n       -       -       smtpd -o 
smtpd_enforce_tls=yes -o smtpd_sasl_auth_enable=yes

/etc/ postfix/mysql_virtual_alias_maps.cf
user = postfix
password = alface
dbname = postfix
table = alias
select_field = goto
where_field = address
hosts = localhost

/etc/postfix/mysql_virtual_mailbox_maps.cf
user = postfix
password = alface
dbname = postfix
table = mailbox
select_field = maildir
where_field = username
hosts = localhost

/etc/postfix/mysql_transport_maps.cf
user = postfix
password = alface
dbname = postfix
table = domain
select_field = transport
where_field = domain
hosts = localhost

/etc/postfix/mysql_virtual_mailbox_limit_maps.cf
user = postfix
password = alface
dbname = postfix
table = mailbox
select_field = quota
where_field = username
hosts = localhost

#######
Dúvidas:
- Alguém já passou por este problema?
- Quando o email é enviado localmente ele não loga no /var/log/mail.log, isto 
está correto?
- Alguém nesta lista tá usando postfix + mysql+ maildrop?
- Se o maildrop está conseguindo enviar os emails localmente significa que ele 
já está integrado com o myslq, certo?


Agradeço as dicas de todos






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