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


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

The following constructors are provided:
: 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:

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

new_from_string($text, %options): returns Mail::SPF::Mech::A; throws
, 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:

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:

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.


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


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


Julian Mehnle <>, Shevek <>


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