socketmap_table (5)

Contents

NAME
SYNOPSIS
DESCRIPTION
PROTOCOL
REQUEST FORMAT
REPLY FORMAT
SECURITY
SEE ALSO
README FILES
BUGS
LICENSE
HISTORY
AUTHOR(S)

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 specifies 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






Use "postconf readme_directory" or
"postconf html_directory" to locate this information.


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