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

NAME
       Net::SMTP - Simple Mail Transfer Protocol Client

SYNOPSIS
           use Net::SMTP;

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

DESCRIPTION
       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.

EXAMPLES
       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";
           $smtp->quit;

       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');

           $smtp->mail($ENV{USER});
           $smtp->to('postmaster');

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

           $smtp->quit;

CONSTRUCTOR
       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

           Example:

               $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,
                                     );

METHODS
       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 Notification).

           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 configuration.

           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.

ADDRESSES
       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

SEE ALSO
       Net::Cmd

AUTHOR
       Graham Barr <gbarr@pobox.com>

COPYRIGHT
       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 v5.12.1                      2010-04-26                    Net::SMTP(3pm)
 

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