Postfix: Recipient address rejected: User unknown in virtual mailbox table

[xchrix]

hello

i have a new server installed latest ispcp
when i try to send mail via webmail tool i get the following error:

Code:

Message not sent. Server replied:

    Requested action not taken: mailbox unavailable
    550 5.1.1 <xxxx@xxxx.com>: Recipient address rejected: User unknown in virtual mailbox table

xxx@xxx.com is a normal email address which is working correct. i haven't changed anything in main.cf in /etc/postfix

postconf -n says following:

Code:

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_at_myorigin = yes
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/lib/postfix
inet_interfaces = all
local_destination_recipient_limit = 1
local_recipient_maps = unix:passwd.byname $alias_database
local_transport = local
mail_spool_directory = /var/mail
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
mydestination = $myhostname, $mydomain
mydomain = vcvps1301.vcdns.de.local
myhostname = vcvps1301.vcdns.de
mynetworks_style = host
myorigin = $myhostname
recipient_delimiter = +
setgid_group = postdrop
smtpd_banner = $myhostname ESMTP ispCP 1.0.0 RC4 OMEGA Managed
smtpd_data_restrictions = reject_multi_recipient_bounce,                               reject_unauth_pipelining
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks,                               permit_sasl_authenticated,                               reject_invalid_helo_hostname,                               reject_non_fqdn_helo_hostname
smtpd_recipient_restrictions = reject_unknown_recipient_domain,                               permit_mynetworks,                               permit_sasl_authenticated,                               reject_unauth_destination,                               reject_unlisted_recipient,                               check_policy_service inet:127.0.0.1:12525,                               check_policy_service inet:127.0.0.1:60000,                               permit
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous, noplaintext
smtpd_sender_restrictions = reject_non_fqdn_sender,                               reject_unknown_sender_domain,                               permit_mynetworks,                               permit_sasl_authenticated
transport_maps = hash:/etc/postfix/ispcp/transport
virtual_alias_maps = hash:/etc/postfix/ispcp/aliases
virtual_gid_maps = static:8
virtual_mailbox_base = /var/mail/virtual
virtual_mailbox_domains = hash:/etc/postfix/ispcp/domains
virtual_mailbox_limit = 0
virtual_mailbox_maps = hash:/etc/postfix/ispcp/mailboxes
virtual_minimum_uid = 1000
virtual_transport = virtual
virtual_uid_maps = static:1000

please help me. thanks.[/code]