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Manual Reference Pages  -  EMAIL::MESSAGEID (3)

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NAME

Email::MessageID - Generate world unique message-ids.

CONTENTS

VERSION

version 1.406

SYNOPSIS



  use Email::MessageID;

  my $mid = Email::MessageID->new->in_brackets;

  print "Message-ID: $mid\x0D\x0A";



DESCRIPTION

Message-ids are optional, but highly recommended, headers that identify a message uniquely. This software generates a unique message-id.

METHODS

    new



  my $mid = Email::MessageID->new;

  my $new_mid = Email::MessageID->new( host => $myhost );



This class method constructs an Email::Address object containing a unique message-id. You may specify custom host and user parameters.

By default, the host is generated from Sys::Hostname::hostname.

By default, the user is generated using Time::HiRes’s gettimeofday and the process ID.

Using these values we have the ability to ensure world uniqueness down to a specific process running on a specific host, and the exact time down to six digits of microsecond precision.

    create_host



  my $domain_part = Email::MessageID->create_host;



This method returns the domain part of the message-id.

    create_user



  my $local_part = Email::MessageID->create_user;



This method returns a unique local part for the message-id. It includes some random data and some predictable data.

    in_brackets

When using Email::MessageID directly to populate the Message-ID field, be sure to use in_brackets to get the string inside angle brackets:



  header => [
    ...
    Message-Id => Email::MessageID->new->in_brackets,
  ],



Don’t make this common mistake:



  header => [
    ...
    Message-Id => Email::MessageID->new->as_string, # WRONG!
  ],



AUTHORS

o Casey West <casey@geeknest.com>
o Ricardo SIGNES <rjbs@cpan.org>

CONTRIBUTOR

Aaron Crane <arc@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2004 by Casey West.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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perl v5.20.3 EMAIL::MESSAGEID (3) 2015-08-10

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