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NAME

       Mail::SPF::Mech::Exists - SPF record "exists" mechanism class

DESCRIPTION

       An object of class Mail::SPF::Mech::Exists represents an SPF record
       mechanism of type "exists".

   Constructors
       The following constructors are provided:

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

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

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

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

   Class methods
       The following class methods are provided:

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

       name: returns string
           Returns 'exists'.

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

   Instance methods
       The following instance methods are provided:

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

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

       match($server, $request): returns boolean
           Checks whether a DNS "A" record exists for the mechanism's target
           domain name, and returns true if one does, or false otherwise.  See
           RFC 4408, 5.7, for details.

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>



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