socketmap_table − Postfix socketmap table lookup client
postmap -q "string" socketmap:unix:pathname:name
postmap -q -
postmap -q - socketmap:unix:pathname:name <inputfile
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).
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.
The socketmap protocol supports only the lookup request.
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:
name <space> key
Search the named socketmap for the specified key.
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.
The requested data was not found.
TIMEOUT <space> reason
PERM <space> reason
The request failed. The reason, if non-empty, is descriptive text.
This map cannot
be used for security-sensitive information,
because neither the connection nor the server are authenticated.
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
"postconf readme_directory" or
"postconf html_directory" to locate this
DATABASE_README, Postfix lookup table overview
The protocol limits are not yet configurable.
The Secure Mailer license must be distributed with this software.
Socketmap support was introduced with Postfix version 2.10.
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA
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