From 5e61585d76ae77fd5e9e96ebabb57afa4d74880d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 14:06:34 +0200 Subject: Adding upstream version 3.5.24. Signed-off-by: Daniel Baumann --- html/cidr_table.5.html | 143 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 html/cidr_table.5.html (limited to 'html/cidr_table.5.html') diff --git a/html/cidr_table.5.html b/html/cidr_table.5.html new file mode 100644 index 0000000..879a792 --- /dev/null +++ b/html/cidr_table.5.html @@ -0,0 +1,143 @@ + + + + Postfix manual - cidr_table(5) + 
+CIDR_TABLE(5)                                                    CIDR_TABLE(5)
+
+NAME
+       cidr_table - format of Postfix CIDR tables
+
+SYNOPSIS
+       postmap -q "string" cidr:/etc/postfix/filename
+
+       postmap -q - cidr:/etc/postfix/filename <inputfile
+
+DESCRIPTION
+       The  Postfix mail system uses optional lookup tables.  These tables are
+       usually in dbm or db format.  Alternatively, lookup tables can be spec-
+       ified in CIDR (Classless Inter-Domain Routing) form. In this case, each
+       input is compared against a list of patterns. When a  match  is  found,
+       the corresponding result is returned and the search is terminated.
+
+       To  find  out  what types of lookup tables your Postfix system supports
+       use the "postconf -m" command.
+
+       To test lookup tables, use the "postmap -q" command as described in the
+       SYNOPSIS above.
+
+TABLE FORMAT
+       The general form of a Postfix CIDR table is:
+
+       pattern     result
+              When a search string matches the specified pattern, use the cor-
+              responding result value. The pattern must be  in  network/prefix
+              or network_address form (see ADDRESS PATTERN SYNTAX below).
+
+       !pattern     result
+              When  a  search string does not match the specified pattern, use
+              the specified result value. The pattern must be in  network/pre-
+              fix  or network_address form (see ADDRESS PATTERN SYNTAX below).
+
+              This feature is available in Postfix 3.2 and later.
+
+       if pattern
+
+       endif  When a search string matches the specified pattern,  match  that
+              search  string  against  the patterns between if and endif.  The
+              pattern must be in network/prefix or network_address  form  (see
+              ADDRESS PATTERN SYNTAX below). The if..endif can nest.
+
+              Note: do not prepend whitespace to text between if..endif.
+
+              This feature is available in Postfix 3.2 and later.
+
+       if !pattern
+
+       endif  When a search string does not match the specified pattern, match
+              that search string against the patterns between  if  and  endif.
+              The  pattern  must  be in network/prefix or network_address form
+              (see ADDRESS PATTERN SYNTAX below). The if..endif can nest.
+
+              Note: do not prepend whitespace to text between if..endif.
+
+              This feature is available in Postfix 3.2 and later.
+
+       blank lines and comments
+              Empty lines and whitespace-only lines are ignored, as are  lines
+              whose first non-whitespace character is a `#'.
+
+       multi-line text
+              A  logical  line  starts  with  non-whitespace text. A line that
+              starts with whitespace continues a logical line.
+
+TABLE SEARCH ORDER
+       Patterns are applied in the order as specified in the  table,  until  a
+       pattern is found that matches the search string.
+
+ADDRESS PATTERN SYNTAX
+       Postfix  CIDR  tables  are  pattern-based.  A  pattern is either a net-
+       work_address which requires an exact match, or  a  network_address/pre-
+       fix_length  where  the  prefix_length  part specifies the length of the
+       network_address prefix that must be matched (the other bits in the net-
+       work_address part must be zero).
+
+       An  IPv4 network address is a sequence of four decimal octets separated
+       by ".", and an IPv6 network address is a sequence  of  three  to  eight
+       hexadecimal  octet  pairs separated by ":" or "::", where the latter is
+       short-hand for a sequence of one or more all-zero octet pairs. The pat-
+       tern  0.0.0.0/0 matches every IPv4 address, and ::/0 matches every IPv6
+       address.  IPv6 support is available in Postfix 2.2 and later.
+
+       Before comparisons are made, lookup keys and  table  entries  are  con-
+       verted  from string to binary. Therefore, IPv6 patterns will be matched
+       regardless of leading zeros (a leading zero in an  IPv4  address  octet
+       indicates octal notation).
+
+       Note:  address information may be enclosed inside "[]" but this form is
+       not required.
+
+EXAMPLE SMTPD ACCESS MAP
+       /etc/postfix/main.cf:
+           smtpd_client_restrictions = ... cidr:/etc/postfix/client.cidr ...
+
+       /etc/postfix/client.cidr:
+           # Rule order matters. Put more specific whitelist entries
+           # before more general blacklist entries.
+           192.168.1.1             OK
+           192.168.0.0/16          REJECT
+           2001:db8::1             OK
+           2001:db8::/32           REJECT
+
+SEE ALSO
+       postmap(1), Postfix lookup table manager
+       regexp_table(5), format of regular expression tables
+       pcre_table(5), format of PCRE tables
+
+README FILES
+       DATABASE_README, Postfix lookup table overview
+
+HISTORY
+       CIDR table support was introduced with Postfix version 2.1.
+
+AUTHOR(S)
+       The CIDR table lookup code was originally written by:
+       Jozsef Kadlecsik
+       KFKI Research Institute for Particle and Nuclear Physics
+       POB. 49
+       1525 Budapest, Hungary
+
+       Adopted and adapted by:
+       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
+
+                                                                 CIDR_TABLE(5)
+
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