If “yes”, used to provide master users database. If the args parameter in passdb sql and userdb sql contain the exact same filename, only one SQL connection is used for both passdb and userdb lookups. Add ‘ ‘ to comment out the system user login for now: CheckPassword Checkpassword is an authentication interface originally implemented by qmail. Other special extra fields. Allow user’s network connection to log in from only specified IPs checks against real remote IP, e. Delay login until this time.

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The commonly returned userdb fields are uid, gid, home and mail.


This is of course dovecto, so v2. Returning a user field can be used to change the username. This documentation is for Dovecot v2. If set, explicitly fails the passdb lookup.

Remove ‘ ‘ to use passwd-file: Arguments for the passdb backend. Post as a guest Name. The initial state is failure.

PasswordDatabase/PAM – Dovecot Wiki

External checkpassword program when used with Dovecot extensions. If this was the first passdb, return failure. Sign up or log in Sign up using Google. Continue to the next passdb without changing the authentication state.


Password Databases

It may however also return other fields which dogecot treated specially: Email Required, but never shown. This documentation is for Dovecot v2. Sign up using Facebook. Some passdbs however don’t support returning them at all, such as PAM. It’s in the following format: Return earlier passdb’s success or failure, don’t continue to the next passdb.

authentication – Dovecot: using a separate passdb per service – Server Fault

Authentication By default Dovecot is set up to use system user authentication. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

These apssdb are only saved and used later as if they came from the user database ‘s extra fields. Thus, users can not authenticate against the UNIX socket.

Internally Dovecot maps this as password mismatch. If the system has local users and the checkpassword script setuid s into a local user, the user is able to ptrace into the communication and change the authentication results.


Dovecot doesn’t get the correct password from the database, it only gets a “success” or a “failure” reply.

BasicConfiguration last edited To fix this, you can make the SQL database return a “user” dovrcotwhich makes Dovecot modify the username to the returned value.

Specific checkpassword implementations phpBB dovecot checkpassword authentication, written in python: The credentials are never deleted however, so using this might cause problems with other PAM plugins.

Also “none” can be used to match for a non-authenticating passdb lookup. Skip, if non-empty and the current auth mechanism is not listed here. I’m trying to access my emails using thunderbird but I’m getting an auth problem. If you want to allow all passwords, use an empty password and this field. What to do if authentication failed default: Master passdb can use this to change the username.