1Mail::DKIM::DkPolicy(3)User Contributed Perl DocumentatioMnail::DKIM::DkPolicy(3)
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NAME

6       Mail::DKIM::DkPolicy - represents a DomainKeys Sender Signing Policy
7       record
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DESCRIPTION

10       DomainKeys sender signing policies are described in
11       RFC4870(historical). It is a record published in the message sender's
12       (i.e. the person who transmitted the message) DNS that describes how
13       they sign messages.
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CONSTRUCTORS

16   fetch() - fetch a sender signing policy from DNS
17         my $policy = Mail::DKIM::DkPolicy->fetch(
18                          Protocol => 'dns',
19                          Sender => 'joe@example.org',
20                      );
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22       The following named arguments are accepted:
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24       Protocol
25           always specify "dns"
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27       Author
28           the "author" of the message for which policy is being checked.
29           This is the first email address in the "From" header.  According to
30           RFC 2822, section 3.6.2, the "From" header lists who is responsible
31           for writing the message.
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33       Sender
34           the "sender" of the message for which policy is being checked.
35           This is the first email address in the "Sender" header, or if there
36           is not a "Sender" header, the "From" header.  According to RFC
37           2822, section 3.6.2, the "Sender" header lists who is responsible
38           for transmitting the message.
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40       Depending on what type of policy is being checked, both the Sender and
41       Author fields may need to be specified.
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43       If a DNS error or timeout occurs, an exception is thrown.
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45       Otherwise, a policy object of some sort will be returned.  If no policy
46       is actually published, then the "default policy" will be returned.  To
47       check when this happens, use
48
49         my $is_default = $policy->is_implied_default_policy;
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51   new() - construct a default policy object
52         my $policy = Mail::DKIM::DkPolicy->new;
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54   parse() - gets a policy object by parsing a string
55         my $policy = Mail::DKIM::DkPolicy->parse(
56                          String => 'o=~; t=y'
57                      );
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METHODS

60   apply() - apply the policy to the results of a DKIM verifier
61         my $result = $policy->apply($dkim_verifier);
62
63       The caller must provide an instance of Mail::DKIM::Verifier, one which
64       has already been fed the message being verified.
65
66       Possible results are:
67
68       accept
69           The message is approved by the sender signing policy.
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71       reject
72           The message is rejected by the sender signing policy.
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74       neutral
75           The message is neither approved nor rejected by the sender signing
76           policy. It can be considered suspicious.
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78   flags() - get or set the flags (t=) tag
79       A vertical-bar separated list of flags.
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81   is_implied_default_policy() - is this policy implied?
82         my $is_implied = $policy->is_implied_default_policy;
83
84       If you fetch the policy for a particular domain, but that domain does
85       not have a policy published, then the "default policy" is in effect.
86       Use this method to detect when that happens.
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88   location() - where the policy was fetched from
89       DomainKeys policies only have per-domain policies, so this will be the
90       domain where the policy was published.
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92       If nothing is published for the domain, and the default policy was
93       returned instead, the location will be "undef".
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95   note() - get or set the human readable notes (n=) tag
96       Human readable notes regarding the record. Undef if no notes specified.
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98   policy() - get or set the outbound signing policy (o=) tag
99         my $sp = $policy->policy;
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101       Outbound signing policy for the entity. Possible values are:
102
103       "~" The default. The domain may sign some (but not all) email.
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105       "-" The domain signs all email.
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107   signall() - true if policy is /-"
108   testing() - checks the testing flag
109         my $testing = $policy->testing;
110
111       If nonzero, the testing flag is set on the signing policy, and the
112       verify should not consider a message suspicious based on this policy.
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AUTHOR

115       Jason Long, <jlong@messiah.edu>
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118       Copyright (C) 2006-2009 by Messiah College
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120       This library is free software; you can redistribute it and/or modify it
121       under the same terms as Perl itself, either Perl version 5.8.6 or, at
122       your option, any later version of Perl 5 you may have available.
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126perl v5.28.1                      2018-10-13           Mail::DKIM::DkPolicy(3)
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