2. EL 8
  3. postfix
  4. socketmap_table(5)

Scroll to navigation

SOCKETMAP_TABLE(5) File Formats Manual 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 endpoints 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 each reply are sent as one
    netstring object.






REQUEST FORMAT




The socketmap protocol supports only the lookup request. The
    request has the following form:





  

  
Search the named socketmap for the specified key.




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.






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:



  

  
The requested data was found.

  

  
The requested data was not found.

  

  

  

  

  

  
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
Wietse Venema
Google, Inc.
111 8th Avenue
New York, NY 10011, USA