    SQLITE_TABLE(5)                                                SQLITE_TABLE(5)

    NAME
           sqlite_table - Postfix SQLite configuration

    SYNOPSIS
           postmap -q "string" sqlite:/etc/postfix/filename

           postmap -q - sqlite:/etc/postfix/filename <inputfile

    DESCRIPTION
           The  Postfix  mail system uses optional tables for address rewriting or
           mail routing. These tables are usually in dbm or db format.

           Alternatively, lookup tables can be specified as SQLite databases.   In
           order  to use SQLite lookups, define an SQLite source as a lookup table
           in main.cf, for example:
               alias_maps = sqlite:/etc/sqlite-aliases.cf

           The file /etc/postfix/sqlite-aliases.cf has  the  same  format  as  the
           Postfix main.cf file, and can specify the parameters described below.

    BACKWARDS COMPATIBILITY
           For  compatibility  with other Postfix lookup tables, SQLite parameters
           can also be defined in main.cf.  In order to do that, specify as SQLite
           source  a  name  that  doesn't begin with a slash or a dot.  The SQLite
           parameters will then be accessible as the name you've given the  source
           in  its  definition, an underscore, and the name of the parameter.  For
           example, if the map is specified as "sqlite:sqlitename", the  parameter
           "query" below would be defined in main.cf as "sqlitename_query".

           Normally,  the  SQL  query  is  specified  via a single query parameter
           (described in more detail below).  When this parameter is not specified
           in  the map definition, Postfix reverts to an older interface, with the
           SQL query constructed from the  select_field,  table,  where_field  and
           additional_conditions  parameters.  The old interface will be gradually
           phased out. To migrate to the new interface set:

               query = SELECT [select_field]
                   FROM [table]
                   WHERE [where_field] = '%s'
                       [additional_conditions]

           Insert the value, not the name, of each legacy parameter. Note that the
           additional_conditions  parameter  is  optional  and  if not empty, will
           always start with AND.

    LIST MEMBERSHIP
           When using SQL to store  lists  such  as  $mynetworks,  $mydestination,
           $relay_domains,  $local_recipient_maps, etc., it is important to under-
           stand that the table must store each list member as a separate key. The
           table  lookup  verifies  the *existence* of the key. See "Postfix lists
           versus tables" in the DATABASE_README document for a discussion.

           Do NOT create tables that return the full list of domains in  $mydesti-
           nation or $relay_domains etc., or IP addresses in $mynetworks.

           DO create tables with each matching item as a key and with an arbitrary
           value. With SQL databases it is not uncommon to return the  key  itself
           or a constant value.

    SQLITE PARAMETERS
           dbpath The SQLite database file location. Example:
                      dbpath = customer_database

           query  The  SQL query template used to search the database, where %s is
                  a substitute for the address Postfix is trying to resolve,  e.g.
                      query = SELECT replacement FROM aliases WHERE mailbox = '%s'

                  This parameter supports the following '%' expansions:

                  %%     This is replaced by a literal '%' character.

                  %s     This  is  replaced by the input key.  SQL quoting is used
                         to make sure that the input key does not  add  unexpected
                         metacharacters.

                  %u     When the input key is an address of the form user@domain,
                         %u is replaced by  the  SQL  quoted  local  part  of  the
                         address.   Otherwise, %u is replaced by the entire search
                         string.  If the localpart is empty,  the  query  is  sup-
                         pressed and returns no results.

                  %d     When the input key is an address of the form user@domain,
                         %d is replaced by the  SQL  quoted  domain  part  of  the
                         address.   Otherwise, the query is suppressed and returns
                         no results.

                  %[SUD] The upper-case equivalents of the above expansions behave
                         in  the  query  parameter identically to their lower-case
                         counter-parts.  With  the  result_format  parameter  (see
                         below),  they expand the input key rather than the result
                         value.

                  %[1-9] The patterns %1, %2, ... %9 are replaced  by  the  corre-
                         sponding  most  significant  component of the input key's
                         domain. If the input key is  user@mail.example.com,  then
                         %1 is com, %2 is example and %3 is mail. If the input key
                         is unqualified or does not have enough domain  components
                         to  satisfy all the specified patterns, the query is sup-
                         pressed and returns no results.

                  The domain parameter described below limits the  input  keys  to
                  addresses  in  matching  domains.  When  the domain parameter is
                  non-empty, SQL queries for unqualified addresses or addresses in
                  non-matching domains are suppressed and return no results.

                  This  parameter is available with Postfix 2.2. In prior releases
                  the  SQL  query  was  built  from   the   separate   parameters:
                  select_field,  table, where_field and additional_conditions. The
                  mapping from the old parameters to the equivalent query is:

                      SELECT [select_field]
                      FROM [table]
                      WHERE [where_field] = '%s'
                            [additional_conditions]

                  The '%s' in the WHERE  clause  expands  to  the  escaped  search
                  string.   With  Postfix  2.2 these legacy parameters are used if
                  the query parameter is not specified.

                  NOTE: DO NOT put quotes around the query parameter.

           result_format (default: %s)
                  Format template applied to result attributes. Most commonly used
                  to  append  (or prepend) text to the result. This parameter sup-
                  ports the following '%' expansions:

                  %%     This is replaced by a literal '%' character.

                  %s     This is replaced by the value of  the  result  attribute.
                         When result is empty it is skipped.

                  %u     When the result attribute value is an address of the form
                         user@domain, %u is replaced by  the  local  part  of  the
                         address.  When  the  result  has an empty localpart it is
                         skipped.

                  %d     When a result attribute value is an address of  the  form
                         user@domain,  %d  is  replaced  by the domain part of the
                         attribute value. When the result  is  unqualified  it  is
                         skipped.

                  %[SUD1-9]
                         The  upper-case  and decimal digit expansions interpolate
                         the parts of the input key rather than the result.  Their
                         behavior  is  identical to that described with query, and
                         in fact because  the  input  key  is  known  in  advance,
                         queries  whose  key  does not contain all the information
                         specified in  the  result  template  are  suppressed  and
                         return no results.

                  For example, using "result_format = smtp:[%s]" allows one to use
                  a mailHost attribute as the basis of a transport(5) table. After
                  applying  the result format, multiple values are concatenated as
                  comma  separated  strings.  The  expansion_limit  and  parameter
                  explained  below  allows one to restrict the number of values in
                  the result, which is especially useful for maps that must return
                  at most one value.

                  The  default value %s specifies that each result value should be
                  used as is.

                  This parameter is available with Postfix 2.2 and later.

                  NOTE: DO NOT put quotes around the result format!

           domain (default: no domain list)
                  This is a list of domain names, paths to files, or dictionaries.
                  When   specified,  only  fully  qualified  search  keys  with  a
                  *non-empty* localpart and a matching  domain  are  eligible  for
                  lookup:  'user'  lookups,  bare  domain  lookups  and  "@domain"
                  lookups are not performed. This  can  significantly  reduce  the
                  query load on the SQLite server.
                      domain = postfix.org, hash:/etc/postfix/searchdomains

                  It  is best not to use SQL to store the domains eligible for SQL
                  lookups.

                  This parameter is available with Postfix 2.2 and later.

                  NOTE: DO NOT define this parameter for local(8) aliases, because
                  the input keys are always unqualified.

           expansion_limit (default: 0)
                  A  limit  on  the total number of result elements returned (as a
                  comma separated list) by a lookup against the map.  A setting of
                  zero  disables the limit. Lookups fail with a temporary error if
                  the limit is exceeded.  Setting the  limit  to  1  ensures  that
                  lookups do not return multiple values.

    OBSOLETE QUERY INTERFACE
           This  section  describes  an interface that is deprecated as of Postfix
           2.2. It is replaced by  the  more  general  query  interface  described
           above.   If  the  query  parameter  is  defined,  the legacy parameters
           described here ignored.  Please migrate to the  new  interface  as  the
           legacy interface may be removed in a future release.

           The  following  parameters  can  be  used  to fill in a SELECT template
           statement of the form:

               SELECT [select_field]
               FROM [table]
               WHERE [where_field] = '%s'
                     [additional_conditions]

           The specifier %s is replaced by the search string, and is escaped so if
           it  contains single quotes or other odd characters, it will not cause a
           parse error, or worse, a security problem.

           select_field
                  The SQL "select" parameter. Example:
                      select_field = forw_addr

           table  The SQL "select .. from" table name. Example:
                      table = mxaliases

           where_field
                  The SQL "select .. where" parameter. Example:
                      where_field = alias

           additional_conditions
                  Additional conditions to the SQL query. Example:
                      additional_conditions = AND status = 'paid'

    SEE ALSO
           postmap(1), Postfix lookup table maintenance
           postconf(5), configuration parameters
           ldap_table(5), LDAP lookup tables
           mysql_table(5), MySQL lookup tables
           pgsql_table(5), PostgreSQL lookup tables

    README FILES
           DATABASE_README, Postfix lookup table overview
           SQLITE_README, Postfix SQLITE howto

    LICENSE
           The Secure Mailer license must be distributed with this software.

    HISTORY
           SQLite support was introduced with Postfix version 2.8.

    AUTHOR(S)
           Original implementation by:
           Axel Steiner

                                                                   SQLITE_TABLE(5)