Moved to new doc
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|= Passwd =
User is looked up using `getpwnam()` call, which usually looks into `/etc/passwd` file, but depending on [[http://en.wikipedia.org/wiki/Name_Service_Switch|NSS]] configuration it may also look up the user from eg. LDAP database.
Most commonly used as a user database.
The lookup is by default done in the auth worker processes. If you have only a small local passwd file, you can avoid having extra auth worker processes by disabling it:
driver = passwd
args = blocking=no
== Field overriding and extra fields (obsolete in v2.1+) ==
It's possible to override fields from passwd and add [[UserDatabase/ExtraFields|extra fields]] with templates, but in v2.1+ it's done in a better way by using override_fields. For example:
driver = passwd
#args = home=/var/mail/%u mail=maildir:/var/mail/%u/Maildir
override_fields = home=/var/mail/%u mail=maildir:/var/mail/%u/Maildir
This uses the UID and GID fields from passwd, but home directory is overridden. Also the default [[MailLocation|mail_location]] setting is overridden.
== Passwd as a password database ==
Many systems use shadow passwords nowadays so passwd doesn't usually work as a password database. BSDs are an exception to this, they still set the password field even with shadow passwords.
With FreeBSD, passwd doesn't work as a password database because the password field is replaced by a `*`. But you can use [[AuthDatabase/PasswdFile#Passwd as a password database on FreeBSD|Passwd-file]].
|Moved to https://doc.dovecot.org/configuration_manual/authentication/passwd/|