[immobilia]

/etc/maildroprc :

# Global maildrop filter file

# Uncomment this line to make maildrop default to ~/Maildir for
# delivery- this is where courier-imap (amongst others) will look.
#DEFAULT="$HOME/Maildir"

LOGNAME=tolower("$LOGNAME")
EXTENSION="$1"
RECIPIENT=tolower("$2")
USER="$3"
HOST="$4"
SENDER="$5"
DEFAULT="/home/vmail/$HOST/$USER/."

if ( "$EXTENSION" ne "" )
{
  DELIMITER="+"
}

if (!$SENDER)
{
  SENDER = "<>"
}

#
# Autocreate maildir, if not existant
#

`test -e /home/vmail/$HOST`
if ( $RETURNCODE != 0 )
{
  `mkdir /home/vmail/$HOST`
}

`test -e /home/vmail/$HOST/$USER`
if ( $RETURNCODE != 0 )
{
  `/usr/local/maildrop/bin/maildirmake /home/vmail/$HOST/$USER`
  `chmod -R 0700 /home/vmail/$HOST`
}

#
# Check that user has his own maildrop include,
# if not available, check if $DEFAULT is set
# (newer maildrop get's that from the DB and updates
# it) and deliver or fail temporarily if not available
#

`test -f /home/vmail/.mailfilters/$LOGNAME`
if ( $RETURNCODE == 0 )
{
  include "/home/vmail/.mailfilters/$LOGNAME"
}
else
{
  if ( "$DEFAULT" ne "" )
  {
    to "$DEFAULT"
  }
  else
  {
    EXITCODE=75
    exit
  }
}

In fact my reel question must be:
Can user connect to her mailbox before i create his maildir (manualy or automatically when user received first mail) ?