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Special Forums Cybersecurity how to hide the IP in the email header? Post 5410 by PxT on Tuesday 14th of August 2001 01:55:23 PM
Old 08-14-2001
Quote:
Also, I must take some issue with the broad statment:

.... security by obscurity never works....
A little broad, I admit....just trying to make the point that obscuring the IP address in your email would probably not make one bit of difference to deter port-scans, etc.


I still maintain that it is extremely bad netiquette to intentionally spoof your email headers. Use anonymous remailers instead. If you have ever tried to diagnose a mail system problem, then you should realize the importance of accurate headers... they are put there for a reason! Don't bend the rules of the protocol because they don't suit your tastes. (This is something that Microsoft likes to do...)
 

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Email::Simple(3pm)					User Contributed Perl Documentation					Email::Simple(3pm)

NAME
Email::Simple - simple parsing of RFC2822 message format and headers SYNOPSIS
use Email::Simple; my $email = Email::Simple->new($text); my $from_header = $email->header("From"); my @received = $email->header("Received"); $email->header_set("From", 'Simon Cozens <simon@cpan.org>'); my $old_body = $email->body; $email->body_set("Hello world Simon"); print $email->as_string; ...or, to create a message from scratch... my $email = Email::Simple->create( header => [ From => 'casey@geeknest.com', To => 'drain@example.com', Subject => 'Message in a bottle', ], body => '...', ); $email->header_set( 'X-Content-Container' => 'bottle/glass' ); print $email->as_string; DESCRIPTION
"Email::Simple" is the first deliverable of the "Perl Email Project." The Email:: namespace was begun as a reaction against the increasing complexity and bugginess of Perl's existing email modules. "Email::*" modules are meant to be simple to use and to maintain, pared to the bone, fast, minimal in their external dependencies, and correct. METHODS
new my $email = Email::Simple->new($message, \%arg); This method parses an email from a scalar containing an RFC2822 formatted message and returns an object. $message may be a reference to a message string, in which case the string will be altered in place. This can result in significant memory savings. If you want to create a message from scratch, you should use the "create" method. Valid arguments are: header_class - the class used to create new header objects The named module is not 'require'-ed by Email::Simple! create my $email = Email::Simple->create(header => [ @headers ], body => '...'); This method is a constructor that creates an Email::Simple object from a set of named parameters. The "header" parameter's value is a list reference containing a set of headers to be created. The "body" parameter's value is a scalar value holding the contents of the message body. Line endings in the body will normalized to CRLF. If no "Date" header is specified, one will be provided for you based on the "gmtime" of the local machine. This is because the "Date" field is a required header and is a pain in the neck to create manually for every message. The "From" field is also a required header, but it is not provided for you. header_obj my $header = $email->header_obj; This method returns the object representing the email's header. For the interface for this object, see Email::Simple::Header. header_obj_set $email->header_obj_set($new_header_obj); This method substitutes the given new header object for the email's existing header object. header my @values = $email->header($header_name); my $first = $email->header($header_name); In list context, this returns every value for the named header. In scalar context, it returns the first value for the named header. header_set $email->header_set($field, $line1, $line2, ...); Sets the header to contain the given data. If you pass multiple lines in, you get multiple headers, and order is retained. If no values are given to set, the header will be removed from to the message entirely. header_names my @header_names = $email->header_names; This method returns the list of header names currently in the email object. These names can be passed to the "header" method one-at-a-time to get header values. You are guaranteed to get a set of headers that are unique. You are not guaranteed to get the headers in any order at all. For backwards compatibility, this method can also be called as headers. header_pairs my @headers = $email->header_pairs; This method returns a list of pairs describing the contents of the header. Every other value, starting with and including zeroth, is a header name and the value following it is the header value. body Returns the body text of the mail. body_set Sets the body text of the mail. as_string Returns the mail as a string, reconstructing the headers. crlf This method returns the type of newline used in the email. It is an accessor only. default_header_class This returns the class used, by default, for header objects, and is provided for subclassing. The default default is Email::Simple::Header. CAVEATS
Email::Simple handles only RFC2822 formatted messages. This means you cannot expect it to cope well as the only parser between you and the outside world, say for example when writing a mail filter for invocation from a .forward file (for this we recommend you use Email::Filter anyway). For more information on this issue please consult RT issue 2478, <http://rt.cpan.org/NoAuth/Bug.html?id=2478>. PERL EMAIL PROJECT
This module is maintained by the Perl Email Project <http://emailproject.perl.org/> AUTHORS
Simon Cozens originally wrote Email::Simple in 2003. Casey West took over maintenance in 2004, and Ricardo SIGNES took over maintenance in 2006. COPYRIGHT AND LICENSE
Copyright 2004 by Casey West Copyright 2003 by Simon Cozens This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2011-12-23 Email::Simple(3pm)
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