Postfix: do not list domainin XXX in BOTH mydestination and virtual_mailbox_domains

сабж.

command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
html_directory = no
local_recipient_maps = $virtual_mailbox_maps
local_transport = virtual
mail_owner = postfix
mailq_path = /usr/bin/mailq
manpage_directory = /usr/local/man
message_size_limit = 35000000
myhostname = tst.XXX.ru
mynetworks = 127.0.0.0/8, 192.168.100.0/24
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
sample_directory = /etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
unknown_local_recipient_reject_code = 550
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_create_maildirsize = yes
virtual_gid_maps = static:506
virtual_mailbox_base = /usr/local/virtual
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_limit = 51200000
virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_maildir_limit_message = Sorry, the user's maildir has overdrawn his diskspace quota, please try again later.
virtual_minimum_uid = 100
virtual_overquota_bounce = yes
virtual_transport = virtual
virtual_uid_maps = static:506


почта ходит, но в логах появляется такое сообщение,
чтобы это значило и как исправить?
я же явно mydestination не указываю.