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Email::MessageID.3pm

NAME

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

SYNOPSIS

   use Email::MessageID;
 
   my $mid = Email::MessageID->new;
 
   print "Message-ID: $mid\x0A\x0D";
 
 

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

The Message-Id header must start and end with angle brackets. This is a common mistake:

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

Instead, use "in_brackets" to get the string inside angle brackets.

SEE ALSO

Email::Address, Time::HiRes, Sys::Hostname, perl.

PERL EMAIL PROJECT

This module is maintained by the Perl Email Project.

<http://emailproject.perl.org/wiki/Email::MessageID>

AUTHOR

Casey West, <casey@geeknest.com>.

COPYRIGHT

   Copyright (c) 2004 Casey West.  All rights reserved.
   This module is free software; you can redistribute it and/or modify it
   under the same terms as Perl itself.