Password Databases ================== Dovecot authenticates users from a password database. It needs to contain only usernames and their passwords. The passdb may also return special<extra fields> [PasswordDatabase.ExtraFields.txt]. Dovecot supports defining multiple password databases, so that if the password doesn't match in the first database, it checks the next one. This can be useful if you want to easily support having both virtual users and also local system users in '/etc/passwd'. Currently supported password databases (note that some of them can also be used as user databases): * <PAM> [PasswordDatabase.PAM.txt]: Pluggable Authentication Modules * <Passwd> [AuthDatabase.Passwd.txt]: System users (NSS, '/etc/passwd', or similiar) * <Shadow> [PasswordDatabase.Shadow.txt]: Shadow passwords for system users (NSS,'/etc/shadow' or similiar) * <Passwd-file> [AuthDatabase.PasswdFile.txt]: '/etc/passwd'-like file in specified location * <LDAP> [AuthDatabase.LDAP.txt]: Lightweight Directory Access Protocol * <SQL> [AuthDatabase.SQL.txt]: SQL database (PostgreSQL, MySQL, SQLite) * <BSDAuth> [PasswordDatabase.BSDAuth.txt]: BSD authentication * <VPopMail> [AuthDatabase.VPopMail.txt]: External software used to handle virtual domains * <checkpassword> [PasswordDatabase.CheckPassword.txt]: External checkpassword program which is run (This file was created from the wiki on 2007-06-15 04:42)
