NAME

       Mail::SPF::Mech::A - SPF record "a" mechanism class

DESCRIPTION

       An object of class Mail::SPF::Mech::A represents an SPF record mechanism of type "a".

   Constructors
       The following constructors are provided:

       new(%options): returns Mail::SPF::Mech::A
           Creates a new SPF record "a" mechanism object.

           %options is a list of key/value pairs representing any of the following options:

           qualifier
           domain_spec
           ipv4_prefix_length
           ipv6_prefix_length
               See "new" in Mail::SPF::Mech.

       new_from_string($text, %options): returns Mail::SPF::Mech::A; throws Mail::SPF::ENothingToParse,
       Mail::SPF::EInvalidMech
           Creates a new SPF record "a" mechanism object by parsing the string and any options given.

   Class methods
       The following class methods are provided:

       default_qualifier
       default_ipv4_prefix_length
       default_ipv6_prefix_length
       qualifier_pattern
           See "Class methods" in Mail::SPF::Mech.

       name: returns string
           Returns 'a'.

       name_pattern: returns Regexp
           Returns a regular expression that matches a mechanism name of 'a'.

   Instance methods
       The following instance methods are provided:

       text
       qualifier
       params
       stringify
       domain
       match_in_domain
           See "Instance methods" in Mail::SPF::Mech.

       domain_spec: returns Mail::SPF::MacroString
           Returns the "domain-spec" parameter of the mechanism.

       ipv4_prefix_length: returns integer
           Returns the IPv4 network prefix length of the mechanism.

       ipv6_prefix_length: returns integer
           Returns the IPv6 network prefix length of the mechanism.

       match($server, $request): returns boolean
           Checks whether the mechanism's target domain name (that is, any of its DNS "A" or "AAAA" host
           addresses) matches the given request's IP address (see "ip_address" in Mail::SPF::Request), and
           returns true if it does, or false otherwise.  The mechanism's IP network prefix lengths are respected
           when matching address records against the request's IP address.  See RFC 4408, 5, for the exact
           algorithm used.

SEE ALSO

       Mail::SPF, Mail::SPF::Record, Mail::SPF::Term, Mail::SPF::Mech

       <http://tools.ietf.org/html/rfc4408>

       For availability, support, and license information, see the README file included with Mail::SPF.

AUTHORS

       Julian Mehnle <julian@mehnle.net>, Shevek <cpan@anarres.org>