NAME

       table_redis — format description for smtpd redis tables

DESCRIPTION

       This manual page documents the file format of redis tables used by the smtpd(8) mail daemon.

       The format described here applies to tables as defined in smtpd.conf(5).

REDIS TABLE

       A Redis table allows the storing of usernames, passwords, aliases, and domains in a redis server.

       The  table  is  used by smtpd(8) when authenticating a user, when user information such as user-id and/or
       home directory is required for a delivery, when a domain lookup may be required, and/or when looking  for
       an alias.

       A Redis table consists of one Redis Databases with one or more keys.

       If  the  table  is used for authentication, the password should be encrypted using the crypt(3) function.
       Such passwords can be generated using the encrypt(1) utility or smtpctl(8) encrypt command.

REDIS TABLE CONFIG FILE

       master
             This is the IP of the master redis server.
             To connect via an unix socket use unix:/path/to/sock
             The default is 127.0.0.1
       master_port
             This is the port used to connect to the master redis server.
             The default is 6379
       slave
             This is the IP of the slave redis server, if any.
             To connect via an unix socket use unix:/path/to/sock
       slave_port
             This is the port used to connect to the slave redis server if any.
       database
             The database number to use.
             The default is 0.
       password
             The password to use to authenticate to the redis server if any.
       query_domain
             This is used to provide a query for a domain query call. All the '%s' are replaced
             with the appropriate data, in this case it would be the right hand side of the SMTP address.
             This expects one string to be returned with a matching domain name.
       query_userinfo
             This is used to provide a query for looking up user information.
             All the '%s' are replaced with the appropriate data, in this case it
             would be the left hand side of the SMTP address.
             This expects three fields to be returned an int containing a UID, an int containing a GID
             and a string containing the home directory for the user.
       query_credentials
             This is used to provide a query for looking up credentials. All the '%s' are replaced
             with the appropriate data, in this case it would be the left hand side of the SMTP address.
             the query expects that there are two strings returned one with a
             user name one with a password in encrypted format.
       query_alias
             This is used to provide a query to look up aliases. All the '%s' are replaced
             with the appropriate data, in this case it would be the left hand side of the SMTP address.
             This expects one string to be returned with the user name the alias resolves to.
             If the query returns an array, all the data will be concatenated into one  string  with  ','  as  a
             separator
       query_mailaddr
             This is used to provide a query to check if a mail address exists.
             All the '%s' are replaced with the appropriate data, in this case it would be the SMTP address.
             This expects an integer as a reply, 0 = false and 1 = true

EXAMPLES

       Due to the nature of redis, multiple schemas can be used. Those provided here a known to work.

       domain
             # redis-cli sadd domains example.net
             in the redis table configuration file:
             query_domain SISMEMBER domains %s
       userinfo
             Hash works well for users
             # redis-cli HSET user:foo uid 1001
             # redis-cli HSET user:foo gid 1001
             # redis-cli HSET user:foo maildir /mail/foo
             in the redis table configuration file:
             query_userinfo HMGET user:%s uid gid maildir
       credentials
             We can extend the hash for our user to put credential in it
             # redis-cli HSET user:foo login foo
             # redis-cli HSET user:foo passwd encrypted_password
             in the redis table configuration file:
             query_credentials HMGET user:%s login passwd
       alias
             Using redis sorted list:
             # redis-cli LPUSH aliases:foo@example.net foo
             # redis-cli LPUSH aliases:bar@example.net foo
             in the redis table configuration file:
             query_alias LRANGE aliases:%s 0 -1
       mailaddr
             # redis-cli sadd mailaddr foo@example.net
             in the redis table configuration file:
             query_mailaddr SISMEMBER mailaddr %s

SEE ALSO

       encrypt(1), smtpd.conf(5), smtpctl(8), smtpd(8)

Debian                                            May 14, 2015                                    TABLE_REDIS(5)