109 lines
3.9 KiB
Plaintext
109 lines
3.9 KiB
Plaintext
#++
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# NAME
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# access 5
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# SUMMARY
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# format of Postfix access table
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# SYNOPSIS
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# \fBpostmap /etc/postfix/access\fR
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# DESCRIPTION
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# The optional \fBaccess\fR table directs the Postfix SMTP server
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# to selectively reject or accept mail from or to specific hosts,
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# domains, networks, host addresses or mail addresses.
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#
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# Normally, the \fBaccess\fR table is specified as a text file
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# that serves as input to the \fBpostmap\fR(1) command.
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# The result, an indexed file in \fBdbm\fR or \fBdb\fR format,
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# is used for fast searching by the mail system. Execute the command
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# \fBpostmap /etc/postfix/access\fR in order to rebuild the indexed
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# file after changing the access table.
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#
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# When the table is provided via other means such as NIS, LDAP
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# or SQL, the same lookups are done as for ordinary indexed files.
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#
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# Alternatively, the table can be provided as a regular-expression
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# map where patterns are given as regular expressions. In that case,
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# the lookups are done in a slightly different way as described below.
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# TABLE FORMAT
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# .ad
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# .fi
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# The format of the access table is as follows:
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# .IP "blanks and comments"
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# Blank lines are ignored, as are lines beginning with `#'.
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# .IP "leading whitespace"
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# Lines that begin with whitespace continue the previous line.
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# .IP "\fIpattern action\fR"
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# When \fIpattern\fR matches a mail address, domain or host address,
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# perform the corresponding \fIaction\fR.
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# PATTERNS
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# .ad
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# .fi
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# With lookups from indexed files such as DB or DBM, or from networked
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# tables such as NIS, LDAP or SQL, patterns are tried in the order as
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# listed below:
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# .IP \fIuser\fR@\fIdomain\fR
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# Matches the specified mail address.
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# .IP \fIdomain.name\fR
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# Matches the \fIdomain.name\fR itself and any subdomain thereof,
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# either in hostnames or in mail addresses. Top-level domains will
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# never be matched.
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# .IP \fIuser\fR@
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# Matches all mail addresses with the specified user part.
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# .IP \fInet.work.addr.ess\fR
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# .IP \fInet.work.addr\fR
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# .IP \fInet.work\fR
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# .IP \fInet\fR
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# Matches any host address in the specified network. A network
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# address is a sequence of one or more octets separated by ".".
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# ACTIONS
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# .ad
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# .fi
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# .IP "[\fB45\fR]\fINN text\fR"
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# Reject the address etc. that matches the pattern, and respond with
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# the numerical code and text.
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# .IP \fBREJECT\fR
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# Reject the address etc. that matches the pattern. A generic
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# error response message is generated.
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# .IP \fBOK\fR
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# Accept the address etc. that matches the pattern.
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# .IP \fIrestriction...\fR
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# Apply the named UCE restriction(s) (\fBpermit\fR, \fRreject\fR,
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# \fBreject_unauth_destination\fR, and so on).
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# REGULAR EXPRESSION TABLES
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# .ad
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# .fi
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# This section describes how the table lookups change when the table
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# is given in the form of regular expressions. For a description of
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# regular expression lookup table syntax, see \fBregexp_table\fR(5)
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# or \fBpcre_table\fR(5).
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#
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# Each pattern is a regular expression that is applied to the entire
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# string being looked up. Depending on the application, that string
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# is an entire client hostname, an entire client IP address, or an
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# entire mail address. Thus, no parent domain or parent network search
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# is done, and \fIuser@domain\fR mail addresses are not broken up into
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# their \fIuser@\fR and \fIdomain\fR constituent parts.
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#
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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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#
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# Actions are the same as with normal indexed file lookups, with
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# the additional feature that parenthesized substrings from the
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# pattern can be interpolated as \fB$1\fR, \fB$2\fR and so on.
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# BUGS
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# The table format does not understand quoting conventions.
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# SEE ALSO
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# postmap(1) create mapping table
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# smtpd(8) smtp server
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# pcre_table(5) format of PCRE tables
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# regexp_table(5) format of POSIX regular expression tables
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# LICENSE
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# .ad
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# .fi
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# The Secure Mailer license must be distributed with this software.
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# AUTHOR(S)
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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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