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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

           Port - Select a port on the remote host to connect to (default is 25)

           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.