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DMAIL(1)							      DMAIL(1)

       dmail - procmail Mail Delivery Module

       dmail [-D] [-f from_name] [-s] [-k keyword_list] [user][+folder]

       dmail  delivers	mail  to a user's INBOX or a designated folder.	 dmail
       may  be	configured  as	 a   drop-in   replacement   for   binmail(1),
       mail.local(1) for use with a mail delivery filter such as procmail(1).

       Because of security considerations (see below) dmail is not intended to
       be used for direct delivery by  the  mailer  daemon;  tmail(1)  is  the
       preferred  tool	for  this purpose.  If dmail is used for mailer daemon
       delivery, the mailer daemon must invoke dmail with the  dmail  process'
       user id set to the recipient's user id.

       When  dmail  exits, it returns exit status values to enable procmail(1)
       to determine whether a message was  delivered  successfully  or	had  a
       temporary  (requeue for later delivery) or permanent (return to sender)

       If the user name is present, it must be the same as the logged-in  user

       If  the	+folder extension is included in the user argument (or appears
       by itself if there is no user argument), dmail will attempt to  deliver
       to  the	designated  folder.   If  the  folder  does  not  exist or the
       extension is not included, the  message	is  delivered  to  the	user's
       INBOX.	If  delivery  is to INBOX and no INBOX currently exists, dmail
       will create a new INBOX.	 dmail recognizes the format  of  an  existing
       INBOX or folder, and appends the new message in that format.

       The  -D	flag  specifies	 debugging;  this  enables  additional message

       The -f or -r flag is used to specify a Return-Path.  The header
	  Return-Path: <from_name>
       is prepended to the message before delivery.

       The -s flag specifies that the message will be flagged as being "seen".

       The -k flag is used to specify delivery keywords, which are set on  the
       message	at  delivery  time  if	and  only  if the keywords are already
       defined in the mailbox.	Multiple keywords can be specified by using  a
       quoted string, e.g.,
	  dmail -k "$Junk Discard" +junkbox

       Absolute	 pathnames  and	 ~user	specifications	are  not  permitted in
       +folder extensions.

       Unlike tmail you can use dmail to deliver to IMAP4 namespace names  via
       +folder extensions.  This means that it is possible to deliver to mh(1)
       format mailboxes.

       However, this can also include such namespaces as #shared, #public, and
       #ftp.   In  most cases, it is undesirable to allow anybody sending mail
       to the user to deliver to these namespaces.  Consequently, there	 needs
       to  be  a  rule	in place in the configuration of either sendmail(8) or
       procmail(1) to prevent such abuse.

       Mark Crispin, MRC@CAC.Washington.EDU


				 June 18, 2007			      DMAIL(1)
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