95 lines
3.0 KiB
Plaintext
95 lines
3.0 KiB
Plaintext
#++
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# NAME
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# cidr_table 5
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# SUMMARY
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# format of Postfix CIDR tables
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# SYNOPSIS
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# \fBpostmap -q "\fIstring\fB" cidr:/etc/postfix/\fIfilename\fR
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#
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# \fBpostmap -q - cidr:/etc/postfix/\fIfilename\fR <\fIinputfile\fR
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# DESCRIPTION
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# The Postfix mail system uses optional lookup tables.
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# These tables are usually in \fBdbm\fR or \fBdb\fR format.
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# Alternatively, lookup tables can be specified in CIDR
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# (Classless Inter-Domain Routing) form.
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#
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# To find out what types of lookup tables your Postfix system
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# supports use the "\fBpostconf -m\fR" command.
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#
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# To test lookup tables, use the "\fBpostmap -q\fR" command as
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# described in the SYNOPSIS above.
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# TABLE FORMAT
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# .ad
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# .fi
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# The general form of a Postfix CIDR table is:
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# .IP "\fInetwork_address\fB/\fInetwork_mask result\fR"
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# When a search string matches the specified network block,
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# use the corresponding \fIresult\fR value. Specify
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# 0.0.0.0/0 to match every IPv4 address, and ::/0 to match
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# every IPv6 address.
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#
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# An IPv4 network address is a sequence of four decimal octets
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# separated by ".", and an IPv6 network address is a sequence
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# of three to eight hexadecimal octet pairs separated by ":".
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#
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# Before comparisons are made, lookup keys and table entries
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# are converted from string to binary. Therefore table entries
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# will be matched regardless of redundant zero characters.
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#
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# Note: address information may be enclosed inside "[]" but
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# this form is not recommended.
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#
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# IPv6 support is available in Postfix 2.2 and later.
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# .IP "\fInetwork_address result\fR"
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# When a search string matches the specified network address,
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# use the corresponding \fIresult\fR value.
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# .IP "blank lines and comments"
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# Empty lines and whitespace-only lines are ignored, as
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# are lines whose first non-whitespace character is a `#'.
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# .IP "multi-line text"
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# A logical line starts with non-whitespace text. A line that
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# starts with whitespace continues a logical line.
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# TABLE SEARCH ORDER
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# .ad
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# .fi
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# Patterns are applied in the order as specified in the table, until a
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# pattern is found that matches the search string.
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# EXAMPLE SMTPD ACCESS MAP
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# /etc/postfix/main.cf:
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# .ti +4
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# smtpd_client_restrictions = ... cidr:/etc/postfix/client.cidr ...
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#
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# /etc/postfix/client.cidr:
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# .in +4
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# # Rule order matters. Put more specific whitelist entries
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# # before more general blacklist entries.
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# 192.168.1.1 OK
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# 192.168.0.0/16 REJECT
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# .in -4
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# SEE ALSO
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# postmap(1), Postfix lookup table manager
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# regexp_table(5), format of regular expression tables
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# pcre_table(5), format of PCRE tables
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# README FILES
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# .ad
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# .fi
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# Use "\fBpostconf readme_directory\fR" or
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# "\fBpostconf html_directory\fR" to locate this information.
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# .na
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# .nf
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# DATABASE_README, Postfix lookup table overview
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# AUTHOR(S)
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# The CIDR table lookup code was originally written by:
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# Jozsef Kadlecsik
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# kadlec@blackhole.kfki.hu
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# KFKI Research Institute for Particle and Nuclear Physics
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# POB. 49
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# 1525 Budapest, Hungary
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#
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# Adopted and adapted by:
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# Wietse Venema
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# IBM T.J. Watson Research
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# P.O. Box 704
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# Yorktown Heights, NY 10598, USA
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#--
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