Mail::DKIM(3pm)

1Mail::DKIM(3)         User Contributed Perl Documentation        Mail::DKIM(3)
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NAME

6       Mail::DKIM - Signs/verifies Internet mail with DKIM/DomainKey
7       signatures
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VERSION

10       version 1.20230630
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SYNOPSIS

13         # verify a message
14         use Mail::DKIM::Verifier;
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16         # create a verifier object
17         my $dkim = Mail::DKIM::Verifier->new();
18
19         # read an email from stdin, pass it into the verifier
20         while (<STDIN>)
21         {
22             # remove local line terminators
23             chomp;
24             s/\015$//;
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26             # use SMTP line terminators
27             $dkim->PRINT("$_\015\012");
28         }
29         $dkim->CLOSE;
30
31         # what is the result of the verify?
32         my $result = $dkim->result;
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DESCRIPTION

35       This module implements the various components of the DKIM and
36       DomainKeys message-signing and verifying standards for Internet mail.
37       It currently tries to implement these specifications:
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39       RFC4871, for DKIM
40       RFC4870, for DomainKeys
41       draft-ietf-dmarc-arc-protocol-06, for ARC
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43       The module uses an object-oriented interface. You use one of two
44       different classes, depending on whether you are signing or verifying a
45       message. To sign, use the Mail::DKIM::Signer class. To verify, use the
46       Mail::DKIM::Verifier class. Simple, eh?
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48       Likewise for ARC, use the ARC modules Mail::DKIM::ARC::Signer and
49       Mail::DKIM::ARC::Verifier
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51       If you're sending to test libraries which expect the tags in headers to
52       be sorted, you can set $Mail::DKIM::SORTTAGS to a true value, and all
53       created headers will get sorted keys
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KNOWN BUGS

65       Problems passing `make test' seem to usually point at a faulty DNS
66       configuration on your machine, or something weird about your OpenSSL
67       libraries.
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69       The "author signing policy" component is still under construction. The
70       author signing policy is supposed to identify the practice of the
71       message author, so you could for example reject a message from an
72       author who claims they always sign their messages. See
73       Mail::DKIM::Policy.
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75       Please report bugs to the CPAN RT, or github issue tracker.
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77       https://rt.cpan.org/Public/Dist/Display.html?Name=Mail-DKIM
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79       https://github.com/fastmail/mail-dkim/issues
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AUTHORS

82       •   Jason Long <jason@long.name>
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84       •   Marc Bradshaw <marc@marcbradshaw.net>
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86       •   Bron Gondwana <brong@fastmailteam.com> (ARC)
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CONTRIBUTORS

89       •   Aaron Thompson <dev@aaront.org>
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91       •   Bron Gondwana <brong@fastmail.fm>
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93       •   Christian Jaeger <ch@christianjaeger.ch>
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95       •   Damien MASCRÉ <damienmascre@free.fr>
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97       •   jasonlong <jasonlong@f38efd27-133c-0410-a3cc-a5f95e9cf04f>
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99       •   José Borges Ferreira <jose.ferreira@bitsighttech.com>
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101       •   Marc Bradshaw <marc@fastmailteam.com>
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103       •   Martijn van de Streek <martijn@vandestreek.net>
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105       •   Martin H. Sluka <martin@sluka.de>
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107       •   Matthäus Wander <mail@wander.science>
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109       •   Mohammad S Anwar <mohammad.anwar@yahoo.com>
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THANKS

112       Work on ensuring that this module passes the ARC test suite was
113       generously sponsored by Valimail (https://www.valimail.com/)
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COPYRIGHT AND LICENSE

116       •   Copyright (C) 2013 by Messiah College
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118       •   Copyright (C) 2010 by Jason Long
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120       •   Copyright (C) 2017 by Standcore LLC
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122       •   Copyright (C) 2020 by FastMail Pty Ltd
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124       This library is free software; you can redistribute it and/or modify it
125       under the same terms as Perl itself, either Perl version 5.8.6 or, at
126       your option, any later version of Perl 5 you may have available.
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130perl v5.38.0                      2023-07-24                     Mail::DKIM(3)