Static User Database

Static user database can be used when you want to use only single UID and GID values for all users, and their home directories can be specified with a simple template. The syntax is:

userdb {
  driver = static
  args = uid=<uid> gid=<gid> home=<dir template>
}

The home is optional. You can also return other extra fields. You can use the standard variables everywhere.

LDA and passdb lookup for user verification

Unless your MTA already verifies that the user exists before calling dovecot-lda, you'll most likely want dovecot-lda itself to verify the user's existence. Since dovecot-lda looks up the user only from the userdb, it of course doesn't work with static userdb because there is no list of users. Normally static userdb handles this by doing a passdb lookup instead. This works with most passdbs, with PAM being the most notable exception. If you want to avoid this user verification, you can add allow_all_users=yes to the args in which case the passdb lookup is skipped.

Example

userdb {
  driver = static
  args = uid=500 gid=500 home=/home/%u
}