Re: [Exim] dnslists modification (2nd time)

> Usage:
>     deny dnslists = some.blacklist.org!=127.0.0.3,127.0.0.4

  Item Lists
       Some variables and attributes with the type of string are
       really lists of items (such as hostnames, hostname regular
       expressions, IP addresses, etc.).  Lists are normally sim-
       ply colon (:) separated values.  Generally the colon may
       be preceded and/or followed by arbitrary whitespace,
       though of course in an attribute value (i.e. anywhere
       except in the config file) this means the value must be
       quoted or the whitespace characters must be each escaped
       with a backslash (\).

       In some cases an optional semicolon (;) separated sub-
       field may be given to given with an item value as well.
       In that case the first sub-field is the primary item value
       and the second sub-field is, in most cases, a string
       treated as an error message or other descriptive text to
       be associated with the item.  Note that the message text
       is not quoted (and is not separately quotable) so it must
       not contain another colon (`:') character.  Escape pro-
       cessing as described above cannot protect a field separa-
       tor.  Note that in an attribute definition (i.e. anywhere
       except in the config file, though currently no attributes
       allow sub-fields) if you use the semicolon separator to
       specify a sub-field then you must either escape it with a
       backslash or enclose the entire attribute definition in
       double quotes.  The text message may contain semicolons
       itself though since it extends to the end of the field
       (i.e. to the next colon (`:') character).
       Items in a list of hostnames or IP addresses may be
       negated by prefixing them with an exclamation mark (!).
       When some value is being compared to the items in the list
       then a match of a negated item will cause the remainder of
       the items in the list to be ignored and for a no-match
       condition to be immediately indicated (thus implementing a
       ``first match wins'' algorithm).  For example in a list of
       IP addresses the following would match any address in the
       range 10.0.0.0 through 10.255.255.255 except 10.1.1.1:

           ! 10.1.1.1 : 10/8

   IP and IP Network Address Representation
       As mentioned above some lists may contain strings repre-
       senting IP addresses.  They are specified in a format com-
       patible with inet_net_pton(3).  Generally speaking this
       means a host may be specified in the standard four-octet
       ASCII form, and any CIDR network may be specified by a
       four-octet number follwed by a slash (`/') and a number
       specifying the number of bits in the network portion.

       The magic keyword localnet represents a run-time generated
       pattern constructed to represent the classical IP network
       for the local address of the current connection.  This
       keyword is of little use to anyone using either a super-
       net, or a subnet of anything larger than a Class C (/24)
       network.

       Optionally if smail has been compiled with ``HAVE=LIBWHO-
       SON'' then there is also support for a magic keyword
       whoson which can be used to query a WHOSON server for
       additonal IP numbers which are currently authorised to
       relay mail remotely via SMTP.

   Hostname Regular Expressions
       As mentioned above some lists may contain hostname regular
       expressions.  These are simply regular expression strings
       which are matched against hostnames.  The expression is
       implicitly anchored at the beginning and end of the host-
       name.

       Note that the backslash character (`\') must be quoted
       with itself since it is also the escape character for all
       configuration entries.

       Note that a case-insensitive match is always done if the
       host platform's underlying regular expression library is
       POSIX compliant.

--
                                Greg A. Woods

+1 416 218-0098;            <g.a.woods@???>;           <woods@???>
Planix, Inc. <woods@???>; VE3TCP; Secrets of the Weird <woods@???>