## main.cf
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
append_dot_mydomain = no
readme_directory = no
myhostname = mydomain.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = mydomain.com, localhost
relayhost =
mynetworks = 127.0.0.0/8
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
home_mailbox = Maildir/

#virtual_mailbox_domains = mydomain.com
virtual_mailbox_base = /var/mail/vhosts
virtual_mailbox_maps = hash:/etc/postfix/vmailbox
virtual_minimum_uid = 100
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000

## vmailbox
info@mydomain.com mydomain.com/info/

## Commands
$ mkdir -p /var/mail/vhosts/info
$ postmap /etc/postfix/vmailbox
$ /etc/init.d/postfix restart
$ sendmail info@mydomain.com
subject: Test
^D

## /var/log/mail.info
Feb 23 13:34:12 dell postfix/pickup[7512]: 7F4B21B70D54: uid=0 from=<root>
Feb 23 13:34:12 dell postfix/cleanup[20132]: 7F4B21B70D54: message-id=<20090223133412.7F4B21B70D54@mydomain.com>
Feb 23 13:34:12 dell postfix/qmgr[7510]: 7F4B21B70D54: from=<root@mydomain.com>, size=289, nrcpt=1 (queue active)
Feb 23 13:34:12 dell postfix/local[20155]: 7F4B21B70D54: to=<info@mydomain.com>, relay=local, delay=9.5, delays=9.5/0.01/0/0.03, dsn=5.1.1, status=bounced (unknown user: "info")
Feb 23 13:34:12 dell postfix/cleanup[20132]: 9C43A1B70D58: message-id=<20090223133412.9C43A1B70D58@mydomain.com>
Feb 23 13:34:12 dell postfix/bounce[20157]: 7F4B21B70D54: sender non-delivery notification: 9C43A1B70D58
Feb 23 13:34:12 dell postfix/qmgr[7510]: 7F4B21B70D54: removed
Feb 23 13:34:12 dell postfix/qmgr[7510]: 9C43A1B70D58: from=<>, size=1941, nrcpt=1 (queue active)
Feb 23 13:34:12 dell postfix/local[20155]: 9C43A1B70D58: to=<joe@mydomain.com>, orig_to=<root@mydomain.com>, relay=local, delay=0.02, delays=0.01/0/0/0.01, dsn=2.0.0, status=sent (delivered to maildir)
Feb 23 13:34:12 dell postfix/qmgr[7510]: 9C43A1B70D58: removed