User authentication using local file

[Duc Anh Do]

Hi,

The args parameter of userdb contains scheme, username format and location
of the password file. Please take a look this link
https://doc.dovecot.org/configuration_manual/authentication/passwd_file/

For example, mine is:
userdb {
  driver = passwd-file
  args = username_format=%u /etc/dovecot/imap.passwd
}

$ head /etc/dovecot/imap.passwd
to at localhost.local
:{plain}1:vmail:vmail::::userdb_mail=mdbox:~/Mdbox/%d/%n:INDEX=~/indexes/%d/%n

On Thu, 23 Mar 2023 at 05:08, Horst Simon <horst.simon2 at icloud.com> wrote:

> OS environment:
>
> Linux qnap-nas 5.10.60-qnap #1 SMP Thu Jan 12 04:39:10 CST 2023 x86_64
> GNU/Linux
>
> I enabled  "auth-passwdfile.conf.ext” in 10-auth.conf
> #!include auth-deny.conf.ext
> #!include auth-master.conf.ext
> #!include auth-system.conf.ext
> #!include auth-sql.conf.ext
> #!include auth-ldap.conf.ext
> !include auth-passwdfile.conf.ext
> #!include auth-checkpassword.conf.ext
> #!include auth-static.conf.ext
>
> In this file I have following entries and I don’t know what to enter for
> userdb
>
> passdb {
>   driver = passwd-file
>   args = /opt/local/etc/dovecot/users
> }
>
> userdb {
>   driver = passwd-file
>   #args = username_format=%u /opt/local/etc/dovecot/users
>
>   # Default fields that can be overridden by passwd-file
>   #default_fields = quota_rule=*:storage=1G
>
>   # Override fields from passwd-file
>   #override_fields = home=/home/virtual/%u
> }
>
> In the users file I have 2 users defined as follow:
> user1:{SSHA512}<encrypted password>::::::
> user2:{SSHA512}<encrypted password::::::
>
> Dovecot gives following error message on startup:
> Mar 23 08:50:30 master: Info: Dovecot v2.3.20 (80a5ac675d) starting up for
> imap, lmtp, sieve (core dumps disabled)
> Mar 23 08:50:30 auth: Debug: Loading modules from directory:
> /opt/local/lib/dovecot/auth
> Mar 23 08:50:30 auth: Debug: Module loaded:
> /opt/local/lib/dovecot/auth/lib20_auth_var_expand_crypt.so
> Mar 23 08:50:30 auth: Fatal: userdb passwd-file: Missing args
>
> I don’t know what arguments I have to enter for userdb
>
> Horst
>
> > On 22 Mar 2023, at 23:00, Narcis Garcia
> >
> > Please, specify OS environment, Dovecot version, and what options did
> > you try.
> >
> >
> > El 22/3/23 a les 4:52, Horst Simon ha escrit:
> >> I try to configure to have user authenticate to a local file called
> >> users, with their mailboxes in ../../spool/dovecot, not in their home
> >> directories. I have this working correctly with pam authentication on
> >> different servers(openSuse and macOS). This server has no pam
> >> authentication so I need to use a local file, but I can not make any
> >> sense of the documentation, can someone please help on which files I
> >> need to change and to which values.
> >> I tried several options but getting all kind of errors with UID.
> >>
> >> Horst
> >>
> >
> > --
> >
> > Narcis Garcia
> >
> > __________
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> > masked enough at this mail public archive. Public archive administrator
> > should fix this against automated addresses collectors.
> >
> >
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