Courier::Filter::Module::Envelope(3pm)			User Contributed Perl Documentation		    Courier::Filter::Module::Envelope(3pm)

NAME

       Courier::Filter::Module::Envelope - Message envelope filter module for the Courier::Filter framework

SYNOPSIS

	   use Courier::Filter::Module::Envelope;

	   my $module = Courier::Filter::Module::Envelope->new(
	       fields	   => {
		   # One or more of the following fields:
		   sender	       => 'paul.greenfield@unisys.com',
		   recipient	       => 'julian@mehnle.net',
		   remote_host	       => '216.250.130.2',
		   remote_host_name    => qr/(^|.)php.net$/,
		   remote_host_helo    => qr/^[^.]*$/
	       },

	       # Optionally the following:
	       response    => $response_text,

	       logger	   => $logger,
	       inverse	   => 0,
	       trusting    => 0,
	       testing	   => 0,
	       debugging   => 0
	   );

	   my $filter = Courier::Filter->new(
	       ...
	       modules	   => [ $module ],
	       ...
	   );

DESCRIPTION

       This class is a filter module class for use with Courier::Filter.  It matches a message if one of the message's envelope fields matches the
       configured criteria.

   Constructor
       The following constructor is provided:

       new(%options): returns Courier::Filter::Module::Envelope
	   Creates a new Envelope filter module.

	   %options is a list of key/value pairs representing any of the following options:

	   fields
	       Required.  A reference to a hash containing the message envelope field names and patterns (as key/value pairs) that messages are to
	       be matched against.  Field names are matched case-insensitively.  Patterns may either be simple strings (for exact, case-sensitive
	       matches) or regular expression objects created by the "qr//" operator (for inexact, partial matches).

	       The following envelope fields are supported:

	       sender
		   The message's envelope sender (from the "MAIL FROM" SMTP command).

	       recipient
		   Any of the message's envelope recipients (from the "RCPT TO" SMTP commands).

	       remote_host
		   The IP address of the SMTP client that submitted the message.

	       remote_host_name
		   The host name (gained by Courier through a DNS reverse lookup) of the SMTP client that submitted the message, if available.

	       remote_host_helo
		   The HELO string that the SMTP client specified, if available.

	       So for instance, to match any message with a sender of "paul.greenfield@unisys.com", directed at "julian@mehnle.net" (possibly
	       among other recipients), you could set the "fields" option as follows:

		   fields      => {
		       sender	   => 'paul.greenfield@unisys.com',
		       recipient   => 'julian@mehnle.net'
		   }

	   response
	       A string that is to be returned literally as the match result in case of a match.  Defaults to "Prohibited <field>: <value>".

	   All options of the Courier::Filter::Module constructor are also supported.  Please see "new()" in Courier::Filter::Module for their
	   descriptions.

   Instance methods
       See "Instance methods" in Courier::Filter::Module for a description of the provided instance methods.

SEE ALSO

       Courier::Filter::Module::Header, Courier::Filter::Module, Courier::Filter::Overview.

       For AVAILABILITY, SUPPORT, and LICENSE information, see Courier::Filter::Overview.

AUTHOR

       Julian Mehnle <julian@mehnle.net>

perl v5.14.2							    2011-12-27				    Courier::Filter::Module::Envelope(3pm)