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Net::SMTP(3pm)			 Perl Programmers Reference Guide		   Net::SMTP(3pm)

       Net::SMTP - Simple Mail Transfer Protocol Client

	   use Net::SMTP;

	   # Constructors
	   $smtp = Net::SMTP->new('mailhost');
	   $smtp = Net::SMTP->new('mailhost', Timeout => 60);

       This module implements a client interface to the SMTP and ESMTP protocol, enabling a perl5
       application to talk to SMTP servers. This documentation assumes that you are familiar with
       the concepts of the SMTP protocol described in RFC821.

       A new Net::SMTP object must be created with the new method. Once this has been done, all
       SMTP commands are accessed through this object.

       The Net::SMTP class is a subclass of Net::Cmd and IO::Socket::INET.

       This example prints the mail domain name of the SMTP server known as mailhost:

	   #!/usr/local/bin/perl -w

	   use Net::SMTP;

	   $smtp = Net::SMTP->new('mailhost');
	   print $smtp->domain,"\n";

       This example sends a small message to the postmaster at the SMTP server known as mailhost:

	   #!/usr/local/bin/perl -w

	   use Net::SMTP;

	   $smtp = Net::SMTP->new('mailhost');


	   $smtp->datasend("To: postmaster\n");
	   $smtp->datasend("A simple test message\n");


       new ( [ HOST ] [, OPTIONS ] )
	   This is the constructor for a new Net::SMTP object. "HOST" is the name of the remote
	   host to which an SMTP connection is required.

	   "HOST" is optional. If "HOST" is not given then it may instead be passed as the "Host"
	   option described below. If neither is given then the "SMTP_Hosts" specified in
	   "Net::Config" will be used.

	   "OPTIONS" are passed in a hash like fashion, using key and value pairs.  Possible
	   options are:

	   Hello - SMTP requires that you identify yourself. This option specifies a string to
	   pass as your mail domain. If not given localhost.localdomain will be used.

	   Host - SMTP host to connect to. It may be a single scalar, as defined for the
	   "PeerAddr" option in IO::Socket::INET, or a reference to an array with hosts to try in
	   turn. The "host" method will return the value which was used to connect to the host.

	   LocalAddr and LocalPort - These parameters are passed directly to IO::Socket to allow
	   binding the socket to a local port.

	   Timeout - Maximum time, in seconds, to wait for a response from the SMTP server
	   (default: 120)

	   ExactAddresses - If true the all ADDRESS arguments must be as defined by "addr-spec"
	   in RFC2822. If not given, or false, then Net::SMTP will attempt to extract the address
	   from the value passed.

	   Debug - Enable debugging information


	       $smtp = Net::SMTP->new('mailhost',
				      Hello => 'my.mail.domain',
				      Timeout => 30,
				      Debug   => 1,

	       # the same
	       $smtp = Net::SMTP->new(
				      Host => 'mailhost',
				      Hello => 'my.mail.domain',
				      Timeout => 30,
				      Debug   => 1,

	       # Connect to the default server from Net::config
	       $smtp = Net::SMTP->new(
				      Hello => 'my.mail.domain',
				      Timeout => 30,

       Unless otherwise stated all methods return either a true or false value, with true meaning
       that the operation was a success. When a method states that it returns a value, failure
       will be returned as undef or an empty list.

       banner ()
	   Returns the banner message which the server replied with when the initial connection
	   was made.

       domain ()
	   Returns the domain that the remote SMTP server identified itself as during connection.

       hello ( DOMAIN )
	   Tell the remote server the mail domain which you are in using the EHLO command (or
	   HELO if EHLO fails).  Since this method is invoked automatically when the Net::SMTP
	   object is constructed the user should normally not have to call it manually.

       host ()
	   Returns the value used by the constructor, and passed to IO::Socket::INET, to connect
	   to the host.

       etrn ( DOMAIN )
	   Request a queue run for the DOMAIN given.

       auth ( USERNAME, PASSWORD )
	   Attempt SASL authentication.

       mail ( ADDRESS [, OPTIONS] )
       send ( ADDRESS )
       send_or_mail ( ADDRESS )
       send_and_mail ( ADDRESS )
	   Send the appropriate command to the server MAIL, SEND, SOML or SAML. "ADDRESS" is the
	   address of the sender. This initiates the sending of a message. The method "recipient"
	   should be called for each address that the message is to be sent to.

	   The "mail" method can some additional ESMTP OPTIONS which is passed in hash like
	   fashion, using key and value pairs.	Possible options are:

	    Size	=> <bytes>
	    Return	=> "FULL" | "HDRS"
	    Bits	=> "7" | "8" | "binary"
	    Transaction => <ADDRESS>
	    Envelope	=> <ENVID>     # xtext-encodes its argument
	    ENVID	=> <ENVID>     # similar to Envelope, but expects argument encoded
	    XVERP	=> 1
	    AUTH	=> <submitter> # encoded address according to RFC 2554

	   The "Return" and "Envelope" parameters are used for DSN (Delivery Status

	   The submitter address in "AUTH" option is expected to be in a format as required by
	   RFC 2554, in an RFC2821-quoted form and xtext-encoded, or <> .

       reset ()
	   Reset the status of the server. This may be called after a message has been initiated,
	   but before any data has been sent, to cancel the sending of the message.

       recipient ( ADDRESS [, ADDRESS, [...]] [, OPTIONS ] )
	   Notify the server that the current message should be sent to all of the addresses
	   given. Each address is sent as a separate command to the server.  Should the sending
	   of any address result in a failure then the process is aborted and a false value is
	   returned. It is up to the user to call "reset" if they so desire.

	   The "recipient" method can also pass additional case-sensitive OPTIONS as an anonymous
	   hash using key and value pairs.  Possible options are:

	     Notify  => ['NEVER'] or ['SUCCESS','FAILURE','DELAY']  (see below)
	     ORcpt   => <ORCPT>
	     SkipBad => 1	 (to ignore bad addresses)

	   If "SkipBad" is true the "recipient" will not return an error when a bad address is
	   encountered and it will return an array of addresses that did succeed.

	     $smtp->recipient($recipient1,$recipient2);  # Good
	     $smtp->recipient($recipient1,$recipient2, { SkipBad => 1 });  # Good
	     $smtp->recipient($recipient1,$recipient2, { Notify => ['FAILURE','DELAY'], SkipBad => 1 });  # Good
	     @goodrecips=$smtp->recipient(@recipients, { Notify => ['FAILURE'], SkipBad => 1 });  # Good
	     $smtp->recipient("$recipient,$recipient2"); # BAD

	   Notify is used to request Delivery Status Notifications (DSNs), but your SMTP/ESMTP
	   service may not respect this request depending upon its version and your site's SMTP

	   Leaving out the Notify option usually defaults an SMTP service to its default behavior
	   equivalent to ['FAILURE'] notifications only, but again this may be dependent upon
	   your site's SMTP configuration.

	   The NEVER keyword must appear by itself if used within the Notify option and "requests
	   that a DSN not be returned to the sender under any conditions."

	     {Notify => ['NEVER']}

	     $smtp->recipient(@recipients, { Notify => ['NEVER'], SkipBad => 1 });  # Good

	   You may use any combination of these three values 'SUCCESS','FAILURE','DELAY' in the
	   anonymous array reference as defined by RFC3461 (see http://rfc.net/rfc3461.html for
	   more information.  Note: quotations in this topic from same.).

	   A Notify parameter of 'SUCCESS' or 'FAILURE' "requests that a DSN be issued on
	   successful delivery or delivery failure, respectively."

	   A Notify parameter of 'DELAY' "indicates the sender's willingness to receive delayed
	   DSNs.  Delayed DSNs may be issued if delivery of a message has been delayed for an
	   unusual amount of time (as determined by the Message Transfer Agent (MTA) at which the
	   message is delayed), but the final delivery status (whether successful or failure)
	   cannot be determined.  The absence of the DELAY keyword in a NOTIFY parameter requests
	   that a "delayed" DSN NOT be issued under any conditions."

	     {Notify => ['SUCCESS','FAILURE','DELAY']}

	     $smtp->recipient(@recipients, { Notify => ['FAILURE','DELAY'], SkipBad => 1 });  # Good

	   ORcpt is also part of the SMTP DSN extension according to RFC3461.  It is used to pass
	   along the original recipient that the mail was first sent to.  The machine that
	   generates a DSN will use this address to inform the sender, because he can't know if
	   recipients get rewritten by mail servers.  It is expected to be in a format as
	   required by RFC3461, xtext-encoded.

       to ( ADDRESS [, ADDRESS [...]] )
       cc ( ADDRESS [, ADDRESS [...]] )
       bcc ( ADDRESS [, ADDRESS [...]] )
	   Synonyms for "recipient".

       data ( [ DATA ] )
	   Initiate the sending of the data from the current message.

	   "DATA" may be a reference to a list or a list. If specified the contents of "DATA" and
	   a termination string ".\r\n" is sent to the server. And the result will be true if the
	   data was accepted.

	   If "DATA" is not specified then the result will indicate that the server wishes the
	   data to be sent. The data must then be sent using the "datasend" and "dataend" methods
	   described in Net::Cmd.

       expand ( ADDRESS )
	   Request the server to expand the given address Returns an array which contains the
	   text read from the server.

       verify ( ADDRESS )
	   Verify that "ADDRESS" is a legitimate mailing address.

	   Most sites usually disable this feature in their SMTP service configuration.  Use
	   "Debug => 1" option under new() to see if disabled.

       help ( [ $subject ] )
	   Request help text from the server. Returns the text or undef upon failure

       quit ()
	   Send the QUIT command to the remote SMTP server and close the socket connection.

       Net::SMTP attempts to DWIM with addresses that are passed. For example an application
       might extract The From: line from an email and pass that to mail(). While this may work,
       it is not recommended.  The application should really use a module like Mail::Address to
       extract the mail address and pass that.

       If "ExactAddresses" is passed to the constructor, then addresses should be a valid
       rfc2821-quoted address, although Net::SMTP will accept accept the address surrounded by
       angle brackets.

	funny user@domain      WRONG
	"funny user"@domain    RIGHT, recommended
	<"funny user"@domain>  OK


       Graham Barr <gbarr@pobox.com>

       Copyright (c) 1995-2004 Graham Barr. All rights reserved.  This program is free software;
       you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.3				    2013-02-26				   Net::SMTP(3pm)
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