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User Databases
If any of the userdbs had an internal failure and the final userdb also returns "continue", the lookup will fail with "internal error". Skip if an earlier userdb already found the user notfound: Arguments for the userdb backend.
Usrrdb a user database, you need to set also uid, gid and preferably also home see VirtualUsers. For example useful with userdb passwd for overriding e. You can also have multiple databases. However some authentication mechanisms do have an explicit support for realms pretty much the same as domains.
Userdb fields and extra fields that are used, unless overwritten by the userdb backend. IMAP and POP3 protocols currently have no concept of "domain", so the username is just something that shows up in your logs and maybe in some configuration, but they have no direct functionality.
You can create, for example, one vmail user which owns all ddovecot mails, or you dovect assign a separate UID for each user. What to do if the userdb lookup had an internal failure default: Lua script for authentication v2.
In that case the easiest way to get Dovecot running is to use the static userdb: Dovecot supports VPopMail directly.
If those mechanisms are used, the username is changed to be "user realm".
See UserIds gids for more information. If only using the result for name: If you leave any of the standard userdb fields uid, gid, home empty, these defaults statif be used.
However from Dovecot's point of view there isn't much of a difference between them. Passwords The password can be in any format that Dovecot supportsbut you need to tell the format to Dovecot because it won't try to guess it. If a passwd lookup and a SQL lookup return the same userdb information, Dovecot's behavior is identical. Currently supported user databases are: Optional extra fields user: The usernames in the passwd and shadow files are expected to contain only the user part, no domain.
Allows you to specify the default password scheme. User Databases After a user has been successfully authenticated, Dovecot looks up the user's userdb information.
UserDatabase/Prefetch - Dovecot Wiki
If this was the first userdb, return "user doesn't exist". The result values that can be used: The userdb backend name args: Home directories Some people are opposed to the idea of virtual users having home directories, but no matter what you call it, it's a good idea to have a directory where user-specific configuration and other state is stored.
The password is in the given scheme. Each one uses different args. This documentation is for Dovecot v2. Continue to the next userdb without changing the user existence state. If you have no idea how you want your users to be configured, select uwerdb HOWTO and follow its instructions.
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