File: README.postfix

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"Postfix + Maildrop Howto" provides maildrop usage howto for the latest postfix
such as current 2.8.7 as of 2012.

See: http://www.postfix.org/MAILDROP_README.html

The following information is quite outdated.
==============================================================================
Date: Sat, 31 Jan 2004 16:00:00 +1:00 (CET)
Tonni Earnshaw <postmaster@billy.demon.nl>
addition for README.postfix in maildrop package

LDAP and maildrop.

maildrop's LDAP support, combined with Courier IMAP's authldap.schema, give 3
new objectclasses over and above standard object classes, that enable LDAP-
based quotas, virtual aliases and virtual mailboxes, as well as regular
$HOME/Maildir based mail directories.

By using the standard combination of master.cf/transport as given below,
NO standard Postfix LDAP lookups are done before passing the message to the
Postfix transport, which takes care of immediate delivery. However, it's most
likely that LDAP lookups have to be done - for example on system and other
aliases - before enabling delivery to users' mailboxes.

With Postfix 2.1.0 (perhaps before that too, I'm still using
postfix-2.0.16-20031231) it is possible to circumvent the
master.cf/transport pair described below by giving maildrop as the
mailbox_command in main.cf and leaving out the master.cf/transport
examples given below. For example:

mailbox_command = /usr/local/bin/maildrop -d ${USER} -w 70 (note upper case).

In as much as maildrop 1.6.3 supports LDAP lookups, and the version of deliverquota
that I was using before (2.2.2) does not, it's thus possible to use Postfix's local
transport instead of a dedicated maildrop transport.

==============================================================================

Date: Wed, 23 Jan 2002 07:31:26 -0700 (MST)
From: Charlie Watts <cewatts@frontier.net>
Subject: addition for README.postfix in maildrop package

README.postfix recommends postfix be configured with:

        maildrop  unix  -       n       n       -       -       pipe
            flags=R user=vmail argv=/usr/local/bin/maildrop -d ${recipient}

However, since version 20010610 of postfix, you need to add the u flag as
well so that postfix downcases addresses before handing them to maildrop.

-------------------------------------------------------------------
Incompatible changes with snapshot-20010610
===========================================

The Postfix pipe delivery agent no longer automatically case-folds
the expansion of $user, $extension or $mailbox command-line macros.
Specify the 'u' flag to get the old behavior.
-------------------------------------------------------------------

It does not automatically case-fold $recipient either.

I'd recommend this instead:
        maildrop  unix  -       n       n       -       -       pipe
            flags=Ru user=vmail argv=/usr/local/bin/maildrop -d ${recipient}

-- 
Charlie Watts
cewatts@frontier.net
Frontier Internet, Inc.
http://www.frontier.net/


Date: Tue, 14 Mar 2000 17:02:04 -0300 (EST)
From: Bruno L. F. Cabral <bruno@openline.com.br>
Reply-To: Maildrop mailing list <maildropl@listbot.com>
To: maildropl@listbot.com
Subject: Re: [maildropl] maildrop, postfix & userdb

Maildrop mailing list - http://www.flounder.net/~mrsam/maildrop/

Hi there

I tried maildrop 0.99.1 and it is now working like a charm with
postfix & userdb, thanks Sam ! :)

vmail is my virtual user, which is a trusted maildrop (-d) user

	# id vmail 
	uid=400(vmail) gid=400(vmail) groups=400(vmail)
	# install -d /home/vmail -o vmail -g vmail -m 700

on /etc/postfix/master.cf:
	maildrop  unix	-	n	n	-	-	pipe
	    flags=R user=vmail argv=/usr/local/bin/maildrop -d ${recipient}

on /etc/postfix/main.cf:
	fallback_transport = maildrop

on /etc/userdb/default:
	vmail	uid=400|gid=400|home=/home/vmail|shell=/bin/bash|systempw=*
	400=	vmail

create one /etc/userdb/domain for each domain, one line for each virtual user
(the uid & gid MUST be equal to vmail's one -- the quota is 5MB or 200 messages)
	user@domain	home=/home/vmail|mail=/home/vmail/domain/user|uid=400|gid=400|quota="5000000S,200C"

to commit the changes:
	# makeuserdb

preparing the virtual mailboxes, the install is for each new domain,
the maildirmake for each user inside the virtual domain
	# su - vmail 
	$ install -d /home/vmail/domain -o vmail -g vmail -m 750
	$ maildirmake /home/vmail/domain/user
	$ exit

now, ready to fight with qmail's pop3d :)

!3runo


Date: Tue, 21 Mar 2000 12:29:48 -0300 (EST)
From: Bruno L. F. Cabral <bruno@openline.com.br>
Reply-To: Maildrop mailing list <maildropl@listbot.com>
To: maildropl@listbot.com
Subject: Re: [maildropl] maildrop, postfix & userdb

Maildrop mailing list - http://www.flounder.net/~mrsam/maildrop/

Hi there

this is an add-on to my previous post

> I tried maildrop 0.99.1 and it is now working like a charm with
> postfix & userdb, thanks Sam ! :)

to postfix handle as local our maildrop's userdb e-mails, you'll have to
(in adition of my previous instructions)

	/etc/postfix/transport:
	virtual.domain		maildrop:

if you want to do some domain redirection, use
	/etc/postfix/virtual:
	webmaster@virtual.domain	johndoe@virtual.domain

(do not use a line like
	virtual.domain		whatever
as stated on postfix' virtual(5) or unlisted users will be rejected
as 'unknown' -- a small postfix glitch, seems)

	/etc/postfix/main.cf:
	transport_maps = hash:/etc/postfix/transport
	virtual_maps = hash:/etc/postfix/virtual

as you may have noticed, no virtual domains listed on mydestination

> now, ready to fight with qmail's pop3d :)

as Sam said before, it is possible to use qmail's qpop3d to read
maildrop's userdb mailboxes. qmail's pop3d is modular, I only had
to write a shim that tests the username/password pair (received
from qmail-popup) against maildrop's userdb files and, on success, 
change the current directory to the one where the user maildir++ resides.
qmail-pop3d takes care of the rest.

the line on inetd.conf becomes:

pop-3	stream	tcp	nowait	root	/usr/sbin/tcpd qmail-popup YOUR.FQHN.HERE /usr/sbin/chkpwd-userdb.pl /usr/sbin/qmail-pop3d .

if ppl think the program is interesting, I can post it. it needs
a small rewrite to get rid of debugging stuff but it is working
very well with maildrop 0.99 & DB files.

thanks Sam, for the pacience with me and for the great job on maildrop.

Cheers, !3runo


From:  Charlie Watts <cewatts@frontier.net>
To:  Sam Varshavchik <mrsam@courier-mta.com>
Date:  30 Mar 2001, 06:40:11 AM
Subject:  Suggested addition maildrop/README.postfix

You may want to add this to maildrop/README.postfix, or postfix folks
using maildrop as LDA may lose mail.

Postfix, by default, will send messages to multiple recipients at a time.

Maildrop assumes that it will be receiving messages for one recipient at a
time.

When postfix hands maildrop a message with multiple recipients, only the
first recipient receives the mail.


If maildrop is configured as a transport named "maildrop" in postfix
(which would be the normal way to do it), adding:

maildrop_destination_recipient_limit = 1

to /etc/postfix/main.cf fixes this behaviour, and causes postfix to hand
messages one recipient at a time to maildrop.




Thanks for a lovely piece of software.

-- 
                          "Dorothy, if you're going to Oz again, I'm
                          going with you", Em barked.  
Charlie Watts             
cewatts@frontier.net