Hello Phil, Phil Howard <ttip...@gmail.com> (Mi 21 Apr 2010 16:32:36 CEST): > I'm setting up a Postfix and Dovecot combination. What I want to do is have > a user database that (1) is not running from some engine (so not LDAP or SQL > or such) ... and (2) is completely disassociated from system users (e.g. > most email users are not in /etc/passwd and most /etc/passwd users are not > email users). Ideal would be a one-file solution, which can be managed by > text editing or simple command line tools. But what I want is ONE file that > both Postfix (for valid recipients) and Dovecot (for user login
A recent demonstration of a German postfix expert used a sed-Script to
convert (basically cut everything behind the first „:“) the dovecot
passdb file to a postfix readable text file (and convert this to a
hash(?)).
I'm not sure, if postfix really can't read a passdb (passwd-like) file.
Probably it (postfix) isn't flexible enough for doing this, or the
expert didn't want to show it.
As an exim user I'd suggest using exim - and enjoing real flexiblity ;-)
The solution I'd prefer is (d) - it makes your exim independend on the
userdb/passdb used by dovecot, you're just talking to the auth-master.
(Something I'd implement additionally is a „softfail“ (4xx error) in
case the socket is not usable.)
# exim config snipped - the dovecot passdb is /etc/vmail/passwd
# for better readability of the (d) alternative below (using
# exims macro feature
SOCKET = /var/run/dovecot/auth-master
REQUEST = VERSION\t1\t0\nUSER\t$pid\t$local_part\tservice=imap\n
# local user router
# chose (a), (b), (c), (d)
vmail:
driver = accept
#(a) local_parts = lsearch;/etc/vmail/passwd
#(b) condition = ${lookup{$local_part}lsearch{/etc/vmail/passwd}{true}}
#(c) condition =
${lookup{$local_p...@$domain}lsearch{/etc/vmail/passwd}{true}}
#(d) condition = ${if match {${readsocket{SOCKET}{REQUEST}}}
{(?m)^USER}}
transport = dovecot
# dovecot transport
# dovecot uses uid vmail for accessing all mailboxes (userdb static)
dovecot:
driver = pipe
command = /usr/lib/dovecot/deliver -d $local_p...@$domain
user = vmail
(…)
> smallish setup on one server, with probably a max of 50 to 100 users and 50
> or so role account mailboxes over the next year or two. Any
> recommendations?
Use Exim ;-)
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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