Re: Using a separate passdb per service
On 08/10/2015 09:58 AM, Steffen Kaiser wrote: > As far as I know, all services use the "auth" in the back. > > But you have the "%s" / service variable. You should be able to craft a > SQL query, that returns NULL & nopasswd=Y, if postfix is not querying > Dovecot. > > I don't know, which service name postfix passes to Dovecot, though, Hmm, that's an interesting idea. I'll explore it further. Thanks! Gerry
Re: Using a separate passdb per service
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Fri, 7 Aug 2015, Gerry wrote: The problem is that Dovecot is operating in proxy mode, which means that the password_query returns NULL as the password and explicitly returns a field "nopasswd" containing "Y". Thus, users can not authenticate against the UNIX socket. What I think I want to do is convince Dovecot to use one passdb for the imap/pop3/managesieve services and different one for the "auth" service. As far as I know, all services use the "auth" in the back. But you have the "%s" / service variable. You should be able to craft a SQL query, that returns NULL & nopasswd=Y, if postfix is not querying Dovecot. I don't know, which service name postfix passes to Dovecot, though, - -- Steffen Kaiser -BEGIN PGP SIGNATURE- Version: GnuPG v1 iQEVAwUBVchZsHz1H7kL/d9rAQIaLwf/WXnI9PMGuN042g7VzfDlZxbsVTvck55X DqPdy1P+YDtMCFpEbTxQG8m9EMfI82Zcd3rzqGbcaMbFqatG7TsucBg06S5j7XSX fs/jNX6DwAdmNIRzjrEU5a8M+Zpo6ifWohBO1IMax3sAs4Z9v+O/hEjX1wiKed24 nFA1QNFG/s2bjDUbf7WBYnU0MnFPeUmMJzy5sR+zFC9lWbaj+Y9b6ayMbdlhVvcz 8qu827/i+2McHlDiS3a2JmwuYTyGpPwfryIojjgTnYvxB1Ex4qsI/mfk8s2am6hY SIvi0Btdlb/ZUmxMy8WKj/hko4Mb+nxO6FBpMU8V8opTJHHUuLf0UA== =1Wip -END PGP SIGNATURE-
Re: Using a separate passdb per service
On 08/08/2015 05:57 AM, Edgar Pettijohn wrote: > I'm not sure if this would work, but possibly having two separate > instances of dovecot with separate configs running may work for you. > > http://wiki2.dovecot.org/RunningDovecot Hi Edgar, Thank you for your suggestion. Yes, that would probably work, but it would be rather fiddly to run two Dovecot instances. I was hoping to be able to do it with just one instance. Gerry
Re: Using a separate passdb per service
I'm not sure if this would work, but possibly having two separate
instances of dovecot with separate configs running may work for you.
http://wiki2.dovecot.org/RunningDovecot
On 08/07/15 11:04, Gerry wrote:
Situation: one front-facing server running Dovecot as IMAP/POP3/
ManageSieve proxy, a mixture of IMAP servers (Dovecot, Exchange, ...)
in the back-end. Dovecot's passdb does lookups against MySQL which
contains a simple user/host mapping, the actual authentication happens
on the back-end IMAP servers. The configuration is more or less as
described here: http://wiki2.dovecot.org/PasswordDatabase/ExtraFields/Proxy
Now I would like to add a Postfix instance on the front-facing server
which listens on the submission port and authenticates users via SASL
using the local Dovecot's UNIX socket. The idea being that a user only
needs to remember one single hostname, one username and one password
for all mail-related services.
The problem is that Dovecot is operating in proxy mode, which means
that the password_query returns NULL as the password and explicitly
returns a field "nopasswd" containing "Y". Thus, users can not
authenticate against the UNIX socket.
What I think I want to do is convince Dovecot to use one passdb for the
imap/pop3/managesieve services and different one for the "auth" service.
The configuration snippet below doesn't work, but it should illustrate
what I want to achieve:
protocols = imap pop3 sieve
service auth {
passdb sql {
driver = sql
args = /etc/dovecot/mysql-auth-sasl.conf.ext
}
unix_listener /var/spool/postfix/private/auth {
user = postfix
group = postfix
mode = 0666
}
}
# IMAP/POP3/ManageSieve auth against MySQL
passdb sql {
driver = sql
args = /etc/dovecot/mysql-auth-default.conf.ext
}
Example mysql-auth-sasl.conf.ext
driver = mysql
connect = host=127.0.0.1 dbname=mail user=mail password=somethingrandom
password_query = SELECT password AS password FROM users WHERE login = '%u'
Example mysql-auth-default.conf.ext:
driver = mysql
connect = host=127.0.0.1 dbname=mail user=mail password=somethingrandom
password_query = SELECT NULL AS password, 'Y' as nopassword, host, 'Y' AS proxy
FROM users WHERE login = '%u'
Any pointers?
Gerry
Using a separate passdb per service
Situation: one front-facing server running Dovecot as IMAP/POP3/
ManageSieve proxy, a mixture of IMAP servers (Dovecot, Exchange, ...)
in the back-end. Dovecot's passdb does lookups against MySQL which
contains a simple user/host mapping, the actual authentication happens
on the back-end IMAP servers. The configuration is more or less as
described here: http://wiki2.dovecot.org/PasswordDatabase/ExtraFields/Proxy
Now I would like to add a Postfix instance on the front-facing server
which listens on the submission port and authenticates users via SASL
using the local Dovecot's UNIX socket. The idea being that a user only
needs to remember one single hostname, one username and one password
for all mail-related services.
The problem is that Dovecot is operating in proxy mode, which means
that the password_query returns NULL as the password and explicitly
returns a field "nopasswd" containing "Y". Thus, users can not
authenticate against the UNIX socket.
What I think I want to do is convince Dovecot to use one passdb for the
imap/pop3/managesieve services and different one for the "auth" service.
The configuration snippet below doesn't work, but it should illustrate
what I want to achieve:
> protocols = imap pop3 sieve
>
> service auth {
> passdb sql {
> driver = sql
> args = /etc/dovecot/mysql-auth-sasl.conf.ext
> }
>
> unix_listener /var/spool/postfix/private/auth {
> user = postfix
> group = postfix
> mode = 0666
> }
> }
>
> # IMAP/POP3/ManageSieve auth against MySQL
> passdb sql {
> driver = sql
> args = /etc/dovecot/mysql-auth-default.conf.ext
> }
Example mysql-auth-sasl.conf.ext
> driver = mysql
> connect = host=127.0.0.1 dbname=mail user=mail password=somethingrandom
> password_query = SELECT password AS password FROM users WHERE login = '%u'
Example mysql-auth-default.conf.ext:
> driver = mysql
> connect = host=127.0.0.1 dbname=mail user=mail password=somethingrandom
> password_query = SELECT NULL AS password, 'Y' as nopassword, host, 'Y' AS
> proxy FROM users WHERE login = '%u'
Any pointers?
Gerry
