Pkg exim4 users - Feb 2012 - autosave sent mail in virtual user's maildir sent folder

Hi,

to get away from freemail-providers in the long term, I set up a
vserver. At present, exim4 is working with dovecot-imapd and sa-exim.

There are virtual email-user-homes in /var/mail/vmail/$USERNAME/
(maildir) and they receive mail through exim4 and dovecots "deliver"
program. Outgoing mail is also handled by exim4. It''s used as a
smarthost and offers "plain" or "login" (through TLS) to
authenticate.

Please see below for appropriate config snippets.

Now I would like exim4 to autosave sent mail in virtual user''s sent
folder. But how?

I know that email clients can be configured to save sent mail to a
specific location, but I would like this job to be done by exim4.

I hope someone out there could help me. Please do :)


 Thanks a lot,
   Rieker

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/etc/exim4/conf.d/auth/35_exim4-config_dovecot
-------------------------------------------------
dovecot_login:
  driver = dovecot
  public_name = LOGIN
  server_socket = /var/run/dovecot/auth-client
  server_set_id = $auth1

dovecot_plain:
  driver = dovecot
  public_name = PLAIN
  server_socket = /var/run/dovecot/auth-client
  server_set_id = $auth1
-------------------------------------------------

-------------------------------------------------
/etc/exim4/conf.d/router/860_exim4-config_dovecot
-------------------------------------------------
dovecot_router:
  driver = accept
  require_files = +/var/mail/vmail/${local_part}/
  #transport = dovecot_transport
  transport = dovecot_virtual_delivery 
-------------------------------------------------

-------------------------------------------------
/etc/exim4/conf.d/transport/30_exim4-config_dovecot
-------------------------------------------------
dovecot_transport:
  driver = appendfile
  user = vmail
  group = vmail
  mode = 0600
  directory=/var/mail/vmail/${lc:$local_part}/
  maildir_format = true
  mode_fail_narrower = false
  envelope_to_add = true
  return_path_add = true

dovecot_virtual_delivery:
  driver = pipe
  command = /usr/lib/dovecot/deliver -d $local_part -f $sender_address -a
$original_local_part@$original_domain
  message_prefix   message_suffix   delivery_date_add
  envelope_to_add
  return_path_add
  log_output
  user = vmail
  temp_errors = 64 : 69 : 70: 71 : 72 : 73 : 74 : 75 : 78
-------------------------------------------------
(config mostly adopted from dovecot wiki)