NAME

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

SYNOPSIS

         # verify a message
         use Mail::DKIM::Verifier;

         # create a verifier object
         my $dkim = Mail::DKIM::Verifier->new();

         # read an email from stdin, pass it into the verifier
         while (<STDIN>)
         {
             # remove local line terminators
             chomp;
             s/\015$//;

             # use SMTP line terminators
             $dkim->PRINT("$_\015\012");
         }
         $dkim->CLOSE;

         # what is the result of the verify?
         my $result = $dkim->result;

DESCRIPTION

       This module implements the various components of the DKIM and DomainKeys message-signing and verifying
       standards for Internet mail.  It currently tries to implement these specifications:

       RFC4871, for DKIM
       RFC4870, for DomainKeys
       draft-ietf-dmarc-arc-protocol-06, for ARC

       The  module uses an object-oriented interface. You use one of two different classes, depending on whether
       you are signing or verifying a message. To sign, use the Mail::DKIM::Signer class.  To  verify,  use  the
       Mail::DKIM::Verifier class. Simple, eh?

       Likewise for ARC, use the ARC modules Mail::DKIM::ARC::Signer and Mail::DKIM::ARC::Verifier

       If  you're  sending  to  test  libraries  which  expect  the  tags  in  headers to be sorted, you can set
       $Mail::DKIM::SORTTAGS to a true value, and all created headers will get sorted keys

SEE ALSO

       Mail::DKIM::Signer, Mail::DKIM::Verifier

       Mail::DKIM::ARC::Signer, Mail::DKIM::ARC::Verifier

       http://dkimproxy.sourceforge.net/

       https://github.com/fastmail/authentication_milter

KNOWN BUGS

       Problems passing `make test' seem to usually point at a faulty DNS  configuration  on  your  machine,  or
       something weird about your OpenSSL libraries.

       The  "author signing policy" component is still under construction. The author signing policy is supposed
       to identify the practice of the message author, so you could for example reject a message from an  author
       who claims they always sign their messages. See Mail::DKIM::Policy.

       Please report bugs to the CPAN RT, or github issue tracker.

       https://rt.cpan.org/Public/Dist/Display.html?Name=Mail-DKIM

       https://github.com/fastmail/mail-dkim/issues

AUTHOR

       Jason Long <jlong@messiah.edu>

CONTRIBUTORS

       Marc    Bradshaw   <marc@marcbradshaw.net>,   Bron   Gondwana   <brong@fastmailteam.com>,   John   Levine
       <john.levine@standcore.com>

THANKS

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

COPYRIGHT AND LICENSE

       Copyright  (C)  2006-2007,  2009  by Messiah College Copyright (C) 2017 by FastMail Pty Ltd Copyright (C)
       2017 by Standcore LLC

       This library is free software; you can redistribute it and/or modify it under  the  same  terms  as  Perl
       itself, either Perl version 5.8.6 or, at your option, any later version of Perl 5 you may have available.

perl v5.30.0                                       2020-02-08                                    Mail::DKIM(3pm)