SOCKETMAP_TABLE(5)                                          SOCKETMAP_TABLE(5)

NAME
       socketmap_table - Postfix socketmap table lookup client

SYNOPSIS
       postmap -q "string" socketmap:inet:host:port:name
       postmap -q "string" socketmap:unix:pathname:name

       postmap -q - socketmap:inet:host:port:name <inputfile
       postmap -q - socketmap:unix:pathname:name <inputfile

DESCRIPTION
       The  Postfix  mail system uses optional tables for address
       rewriting. mail routing or policy lookup.

       The Postfix socketmap client expects TCP endpoint names of
       the  form  inet:host:port:name, or UNIX-domain endponts of
       the form unix:pathname:name.  In both cases,  name  speci-
       fies  the  name  field  in a socketmap client request (see
       "REQUEST FORMAT" below).

PROTOCOL
       Socketmaps use a simple protocol:  the  client  sends  one
       request, and the server sends one reply.  Each request and
       reply are sent as one netstring object.

REQUEST FORMAT
       The socketmap protocol supports only the lookup request.

       Postfix will not generate  partial  search  keys  such  as
       domain  names  without  one  or  more  subdomains, network
       addresses without one or more least-significant octets, or
       email  addresses  without the localpart, address extension
       or domain portion. This behavior is also found with cidr:,
       pcre:, and regexp: tables.

       name <space> key
              Search the named socketmap for the specified key.

REPLY FORMAT
       The Postfix socketmap client requires that replies are not
       longer than 100000 characters (not including the netstring
       encapsulation). Replies must have the following form:

       OK <space> data
              The requested data was found.

       NOTFOUND <space>
              The requested data was not found.

       TEMP <space> reason

       TIMEOUT <space> reason

       PERM <space> reason
              The  request  failed.  The reason, if non-empty, is
              descriptive text.

SECURITY
       This map cannot be used for security-sensitive information,
       because neither the connection nor the server are authenticated.

SEE ALSO
       http://cr.yp.to/proto/netstrings.txt, netstring definition
       postconf(1), Postfix supported lookup tables
       postmap(1), Postfix lookup table manager
       regexp_table(5), format of regular expression tables
       pcre_table(5), format of PCRE tables
       cidr_table(5), format of CIDR tables

README FILES
       DATABASE_README, Postfix lookup table overview

BUGS
       The protocol limits are not yet configurable.

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

HISTORY
       Socketmap support was introduced with Postfix version 2.10.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

                                                            SOCKETMAP_TABLE(5)