[postfix-es] NO RECIBO LOS MAILS

[CyberMauher]

Esto es extraño, no se donde puede estar la falla del Postfix, me anda 
perfecto sólo que los usuarios no reciben los mails. Pueden enviar pero 
no recibir tanto localmente como externamente.

Externamente recibo este mensaje:

This is the mail system at host myhostname.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<maildestino en mydomain> (expanded from <maildestino en dominiodestino.com.ar>):
    User unknown in virtual alias table

Dice que es un usario desconocido en virtual_alias_maps, pero eso no es así porque de hecho el usuario se encuentra en "/etc/postfix/virtual".



host1:~# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
home_mailbox = Maildir/
inet_interfaces = all
inet_protocols = all
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
mydestination = localhost, $myhostname, localhost.$mydomain
mydomain = hostmauher.com.ar
myhostname = host1.hostmauher.com.ar
mynetworks = 127.0.0.0/8, 190.2.30.108/30, 192.168.0.0/24, 
hash:/var/lib/pop-bef                                              
ore-smtp/hosts
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_starttls_timeout = 300s
smtp_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtp_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtp_tls_loglevel = 0
smtp_tls_note_starttls_offer = yes
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_session_cache_timeout = 3600s
smtp_use_tls = yes
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_loglevel = 0
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
virtual_alias_maps = hash:/etc/postfix/virtual