postmap -q "string" tcp:host:port postmap -q - tcp:host:port <inputfile
To find out what types of lookup tables your Postfix system supports use the "postconf -m" command.
The TCP map class implements a very simple protocol: the client sends a request, and the server sends one reply. Requests and replies are sent as one line of ASCII text, terminated by the ASCII newline character. Request and reply parameters (see below) are separated by whitespace.
The tcp_table protocol supports only the lookup request. The request has the following form:
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.
Each reply specifies a status code and text. Replies must be no longer than 4096 characters including the newline terminator.
In request and reply parameters, the character %, each non-printing character, and each whitespace character must be replaced by %XX, where XX is the corresponding ASCII hexadecimal character value. The hexadecimal codes can be specified in any case (upper, lower, mixed).
Do not use TCP lookup tables for security critical purposes. The client-server connection is not protected and the server is not authenticated.
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
Use "postconf readme_directory" or "postconf html_directory" to locate this information.
DATABASE_README, Postfix lookup table overview
The Secure Mailer license must be distributed with this software.
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