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1 | # Net::SMTP.pm |
2 | # |
3 | # Copyright (c) 1995-1997 Graham Barr <gbarr@pobox.com>. All rights reserved. |
4 | # This program is free software; you can redistribute it and/or |
5 | # modify it under the same terms as Perl itself. |
6 | |
7 | package Net::SMTP; |
8 | |
9 | require 5.001; |
10 | |
11 | use strict; |
12 | use vars qw($VERSION @ISA); |
13 | use Socket 1.3; |
14 | use Carp; |
15 | use IO::Socket; |
16 | use Net::Cmd; |
17 | use Net::Config; |
18 | |
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19 | $VERSION = "2.25"; # $Id: //depot/libnet/Net/SMTP.pm#26 $ |
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20 | |
21 | @ISA = qw(Net::Cmd IO::Socket::INET); |
22 | |
23 | sub new |
24 | { |
25 | my $self = shift; |
26 | my $type = ref($self) || $self; |
27 | my $host = shift if @_ % 2; |
28 | my %arg = @_; |
29 | my $hosts = defined $host ? [ $host ] : $NetConfig{smtp_hosts}; |
30 | my $obj; |
31 | |
32 | my $h; |
33 | foreach $h (@{$hosts}) |
34 | { |
35 | $obj = $type->SUPER::new(PeerAddr => ($host = $h), |
36 | PeerPort => $arg{Port} || 'smtp(25)', |
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37 | LocalAddr => $arg{LocalAddr}, |
38 | LocalPort => $arg{LocalPort}, |
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39 | Proto => 'tcp', |
40 | Timeout => defined $arg{Timeout} |
41 | ? $arg{Timeout} |
42 | : 120 |
43 | ) and last; |
44 | } |
45 | |
46 | return undef |
47 | unless defined $obj; |
48 | |
49 | $obj->autoflush(1); |
50 | |
51 | $obj->debug(exists $arg{Debug} ? $arg{Debug} : undef); |
52 | |
53 | unless ($obj->response() == CMD_OK) |
54 | { |
55 | $obj->close(); |
56 | return undef; |
57 | } |
58 | |
59 | ${*$obj}{'net_smtp_host'} = $host; |
60 | |
61 | (${*$obj}{'net_smtp_banner'}) = $obj->message; |
62 | (${*$obj}{'net_smtp_domain'}) = $obj->message =~ /\A\s*(\S+)/; |
63 | |
64 | unless($obj->hello($arg{Hello} || "")) |
65 | { |
66 | $obj->close(); |
67 | return undef; |
68 | } |
69 | |
70 | $obj; |
71 | } |
72 | |
73 | ## |
74 | ## User interface methods |
75 | ## |
76 | |
77 | sub banner |
78 | { |
79 | my $me = shift; |
80 | |
81 | return ${*$me}{'net_smtp_banner'} || undef; |
82 | } |
83 | |
84 | sub domain |
85 | { |
86 | my $me = shift; |
87 | |
88 | return ${*$me}{'net_smtp_domain'} || undef; |
89 | } |
90 | |
91 | sub etrn { |
92 | my $self = shift; |
93 | defined($self->supports('ETRN',500,["Command unknown: 'ETRN'"])) && |
94 | $self->_ETRN(@_); |
95 | } |
96 | |
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97 | sub auth { |
98 | my ($self, $username, $password) = @_; |
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99 | |
100 | require MIME::Base64; |
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101 | require Authen::SASL; |
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102 | |
103 | my $mechanisms = $self->supports('AUTH',500,["Command unknown: 'AUTH'"]); |
104 | return unless defined $mechanisms; |
105 | |
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106 | my $sasl; |
107 | |
108 | if (ref($username) and UNIVERSAL::isa($username,'Authen::SASL')) { |
109 | $sasl = $username; |
110 | $sasl->mechanism($mechanisms); |
111 | } |
112 | else { |
113 | die "auth(username, password)" if not length $username; |
114 | $sasl = Authen::SASL->new(mechanism=> $mechanisms, |
115 | callback => { user => $username, |
116 | pass => $password, |
117 | authname => $username, |
118 | }); |
119 | } |
120 | |
121 | # We should probably allow the user to pass the host, but I don't |
122 | # currently know and SASL mechanisms that are used by smtp that need it |
123 | my $client = $sasl->client_new('smtp',${*$self}{'net_smtp_host'},0); |
124 | my $str = $client->client_start; |
125 | # We dont support sasl mechanisms that encrypt the socket traffic. |
126 | # todo that we would really need to change the ISA hierarchy |
127 | # so we dont inherit from IO::Socket, but instead hold it in an attribute |
128 | |
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129 | my @cmd = ("AUTH", $client->mechanism); |
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130 | my $code; |
131 | |
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132 | push @cmd, MIME::Base64::encode_base64($str,'') |
133 | if defined $str and length $str; |
134 | |
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135 | while (($code = $self->command(@cmd)->response()) == CMD_MORE) { |
136 | @cmd = (MIME::Base64::encode_base64( |
137 | $client->client_step( |
138 | MIME::Base64::decode_base64( |
139 | ($self->message)[0] |
140 | ) |
141 | ), '' |
142 | )); |
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143 | } |
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144 | |
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145 | $code == CMD_OK; |
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146 | } |
147 | |
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148 | sub hello |
149 | { |
150 | my $me = shift; |
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151 | my $domain = shift || "localhost.localdomain"; |
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152 | my $ok = $me->_EHLO($domain); |
153 | my @msg = $me->message; |
154 | |
155 | if($ok) |
156 | { |
157 | my $h = ${*$me}{'net_smtp_esmtp'} = {}; |
158 | my $ln; |
159 | foreach $ln (@msg) { |
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160 | $h->{uc $1} = $2 |
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161 | if $ln =~ /(\w+)\b[= \t]*([^\n]*)/; |
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162 | } |
163 | } |
164 | elsif($me->status == CMD_ERROR) |
165 | { |
166 | @msg = $me->message |
167 | if $ok = $me->_HELO($domain); |
168 | } |
169 | |
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170 | $ok && $msg[0] =~ /\A\s*(\S+)/ |
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171 | ? $1 |
172 | : undef; |
173 | } |
174 | |
175 | sub supports { |
176 | my $self = shift; |
177 | my $cmd = uc shift; |
178 | return ${*$self}{'net_smtp_esmtp'}->{$cmd} |
179 | if exists ${*$self}{'net_smtp_esmtp'}->{$cmd}; |
180 | $self->set_status(@_) |
181 | if @_; |
182 | return; |
183 | } |
184 | |
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185 | sub _addr { |
186 | my $addr = shift; |
187 | $addr = "" unless defined $addr; |
188 | $addr =~ s/^\s*<?\s*|\s*>?\s*$//sg; |
189 | "<$addr>"; |
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190 | } |
191 | |
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192 | sub mail |
193 | { |
194 | my $me = shift; |
195 | my $addr = _addr(shift); |
196 | my $opts = ""; |
197 | |
198 | if(@_) |
199 | { |
200 | my %opt = @_; |
201 | my($k,$v); |
202 | |
203 | if(exists ${*$me}{'net_smtp_esmtp'}) |
204 | { |
205 | my $esmtp = ${*$me}{'net_smtp_esmtp'}; |
206 | |
207 | if(defined($v = delete $opt{Size})) |
208 | { |
209 | if(exists $esmtp->{SIZE}) |
210 | { |
211 | $opts .= sprintf " SIZE=%d", $v + 0 |
212 | } |
213 | else |
214 | { |
215 | carp 'Net::SMTP::mail: SIZE option not supported by host'; |
216 | } |
217 | } |
218 | |
219 | if(defined($v = delete $opt{Return})) |
220 | { |
221 | if(exists $esmtp->{DSN}) |
222 | { |
223 | $opts .= " RET=" . uc $v |
224 | } |
225 | else |
226 | { |
227 | carp 'Net::SMTP::mail: DSN option not supported by host'; |
228 | } |
229 | } |
230 | |
231 | if(defined($v = delete $opt{Bits})) |
232 | { |
233 | if(exists $esmtp->{'8BITMIME'}) |
234 | { |
235 | $opts .= $v == 8 ? " BODY=8BITMIME" : " BODY=7BIT" |
236 | } |
237 | else |
238 | { |
239 | carp 'Net::SMTP::mail: 8BITMIME option not supported by host'; |
240 | } |
241 | } |
242 | |
243 | if(defined($v = delete $opt{Transaction})) |
244 | { |
245 | if(exists $esmtp->{CHECKPOINT}) |
246 | { |
247 | $opts .= " TRANSID=" . _addr($v); |
248 | } |
249 | else |
250 | { |
251 | carp 'Net::SMTP::mail: CHECKPOINT option not supported by host'; |
252 | } |
253 | } |
254 | |
255 | if(defined($v = delete $opt{Envelope})) |
256 | { |
257 | if(exists $esmtp->{DSN}) |
258 | { |
259 | $v =~ s/([^\041-\176]|=|\+)/sprintf "+%02x", ord($1)/sge; |
260 | $opts .= " ENVID=$v" |
261 | } |
262 | else |
263 | { |
264 | carp 'Net::SMTP::mail: DSN option not supported by host'; |
265 | } |
266 | } |
267 | |
268 | carp 'Net::SMTP::recipient: unknown option(s) ' |
269 | . join(" ", keys %opt) |
270 | . ' - ignored' |
271 | if scalar keys %opt; |
272 | } |
273 | else |
274 | { |
275 | carp 'Net::SMTP::mail: ESMTP not supported by host - options discarded :-('; |
276 | } |
277 | } |
278 | |
279 | $me->_MAIL("FROM:".$addr.$opts); |
280 | } |
281 | |
282 | sub send { shift->_SEND("FROM:" . _addr($_[0])) } |
283 | sub send_or_mail { shift->_SOML("FROM:" . _addr($_[0])) } |
284 | sub send_and_mail { shift->_SAML("FROM:" . _addr($_[0])) } |
285 | |
286 | sub reset |
287 | { |
288 | my $me = shift; |
289 | |
290 | $me->dataend() |
291 | if(exists ${*$me}{'net_smtp_lastch'}); |
292 | |
293 | $me->_RSET(); |
294 | } |
295 | |
296 | |
297 | sub recipient |
298 | { |
299 | my $smtp = shift; |
300 | my $opts = ""; |
301 | my $skip_bad = 0; |
302 | |
303 | if(@_ && ref($_[-1])) |
304 | { |
305 | my %opt = %{pop(@_)}; |
306 | my $v; |
307 | |
308 | $skip_bad = delete $opt{'SkipBad'}; |
309 | |
310 | if(exists ${*$smtp}{'net_smtp_esmtp'}) |
311 | { |
312 | my $esmtp = ${*$smtp}{'net_smtp_esmtp'}; |
313 | |
314 | if(defined($v = delete $opt{Notify})) |
315 | { |
316 | if(exists $esmtp->{DSN}) |
317 | { |
318 | $opts .= " NOTIFY=" . join(",",map { uc $_ } @$v) |
319 | } |
320 | else |
321 | { |
322 | carp 'Net::SMTP::recipient: DSN option not supported by host'; |
323 | } |
324 | } |
325 | |
326 | carp 'Net::SMTP::recipient: unknown option(s) ' |
327 | . join(" ", keys %opt) |
328 | . ' - ignored' |
329 | if scalar keys %opt; |
330 | } |
331 | elsif(%opt) |
332 | { |
333 | carp 'Net::SMTP::recipient: ESMTP not supported by host - options discarded :-('; |
334 | } |
335 | } |
336 | |
337 | my @ok; |
338 | my $addr; |
339 | foreach $addr (@_) |
340 | { |
341 | if($smtp->_RCPT("TO:" . _addr($addr) . $opts)) { |
342 | push(@ok,$addr) if $skip_bad; |
343 | } |
344 | elsif(!$skip_bad) { |
345 | return 0; |
346 | } |
347 | } |
348 | |
349 | return $skip_bad ? @ok : 1; |
350 | } |
351 | |
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352 | BEGIN { |
353 | *to = \&recipient; |
354 | *cc = \&recipient; |
355 | *bcc = \&recipient; |
356 | } |
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357 | |
358 | sub data |
359 | { |
360 | my $me = shift; |
361 | |
362 | my $ok = $me->_DATA() && $me->datasend(@_); |
363 | |
364 | $ok && @_ ? $me->dataend |
365 | : $ok; |
366 | } |
367 | |
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368 | sub datafh { |
369 | my $me = shift; |
370 | return unless $me->_DATA(); |
371 | return $me->tied_fh; |
372 | } |
373 | |
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374 | sub expand |
375 | { |
376 | my $me = shift; |
377 | |
378 | $me->_EXPN(@_) ? ($me->message) |
379 | : (); |
380 | } |
381 | |
382 | |
383 | sub verify { shift->_VRFY(@_) } |
384 | |
385 | sub help |
386 | { |
387 | my $me = shift; |
388 | |
389 | $me->_HELP(@_) ? scalar $me->message |
390 | : undef; |
391 | } |
392 | |
393 | sub quit |
394 | { |
395 | my $me = shift; |
396 | |
397 | $me->_QUIT; |
398 | $me->close; |
399 | } |
400 | |
401 | sub DESTROY |
402 | { |
403 | # ignore |
404 | } |
405 | |
406 | ## |
407 | ## RFC821 commands |
408 | ## |
409 | |
410 | sub _EHLO { shift->command("EHLO", @_)->response() == CMD_OK } |
411 | sub _HELO { shift->command("HELO", @_)->response() == CMD_OK } |
412 | sub _MAIL { shift->command("MAIL", @_)->response() == CMD_OK } |
413 | sub _RCPT { shift->command("RCPT", @_)->response() == CMD_OK } |
414 | sub _SEND { shift->command("SEND", @_)->response() == CMD_OK } |
415 | sub _SAML { shift->command("SAML", @_)->response() == CMD_OK } |
416 | sub _SOML { shift->command("SOML", @_)->response() == CMD_OK } |
417 | sub _VRFY { shift->command("VRFY", @_)->response() == CMD_OK } |
418 | sub _EXPN { shift->command("EXPN", @_)->response() == CMD_OK } |
419 | sub _HELP { shift->command("HELP", @_)->response() == CMD_OK } |
420 | sub _RSET { shift->command("RSET")->response() == CMD_OK } |
421 | sub _NOOP { shift->command("NOOP")->response() == CMD_OK } |
422 | sub _QUIT { shift->command("QUIT")->response() == CMD_OK } |
423 | sub _DATA { shift->command("DATA")->response() == CMD_MORE } |
424 | sub _TURN { shift->unsupported(@_); } |
425 | sub _ETRN { shift->command("ETRN", @_)->response() == CMD_OK } |
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426 | sub _AUTH { shift->command("AUTH", @_)->response() == CMD_OK } |
406c51ee |
427 | |
428 | 1; |
429 | |
430 | __END__ |
431 | |
432 | =head1 NAME |
433 | |
434 | Net::SMTP - Simple Mail Transfer Protocol Client |
435 | |
436 | =head1 SYNOPSIS |
437 | |
438 | use Net::SMTP; |
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439 | |
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440 | # Constructors |
441 | $smtp = Net::SMTP->new('mailhost'); |
442 | $smtp = Net::SMTP->new('mailhost', Timeout => 60); |
443 | |
444 | =head1 DESCRIPTION |
445 | |
446 | This module implements a client interface to the SMTP and ESMTP |
447 | protocol, enabling a perl5 application to talk to SMTP servers. This |
448 | documentation assumes that you are familiar with the concepts of the |
449 | SMTP protocol described in RFC821. |
450 | |
451 | A new Net::SMTP object must be created with the I<new> method. Once |
452 | this has been done, all SMTP commands are accessed through this object. |
453 | |
454 | The Net::SMTP class is a subclass of Net::Cmd and IO::Socket::INET. |
455 | |
456 | =head1 EXAMPLES |
457 | |
458 | This example prints the mail domain name of the SMTP server known as mailhost: |
459 | |
460 | #!/usr/local/bin/perl -w |
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461 | |
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462 | use Net::SMTP; |
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463 | |
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464 | $smtp = Net::SMTP->new('mailhost'); |
465 | print $smtp->domain,"\n"; |
466 | $smtp->quit; |
467 | |
468 | This example sends a small message to the postmaster at the SMTP server |
469 | known as mailhost: |
470 | |
471 | #!/usr/local/bin/perl -w |
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472 | |
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473 | use Net::SMTP; |
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474 | |
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475 | $smtp = Net::SMTP->new('mailhost'); |
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476 | |
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477 | $smtp->mail($ENV{USER}); |
478 | $smtp->to('postmaster'); |
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479 | |
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480 | $smtp->data(); |
481 | $smtp->datasend("To: postmaster\n"); |
482 | $smtp->datasend("\n"); |
483 | $smtp->datasend("A simple test message\n"); |
484 | $smtp->dataend(); |
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485 | |
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486 | $smtp->quit; |
487 | |
488 | =head1 CONSTRUCTOR |
489 | |
490 | =over 4 |
491 | |
492 | =item new Net::SMTP [ HOST, ] [ OPTIONS ] |
493 | |
494 | This is the constructor for a new Net::SMTP object. C<HOST> is the |
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495 | name of the remote host to which an SMTP connection is required. |
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496 | |
497 | If C<HOST> is not given, then the C<SMTP_Host> specified in C<Net::Config> |
498 | will be used. |
499 | |
500 | C<OPTIONS> are passed in a hash like fashion, using key and value pairs. |
501 | Possible options are: |
502 | |
503 | B<Hello> - SMTP requires that you identify yourself. This option |
504 | specifies a string to pass as your mail domain. If not |
505 | given a guess will be taken. |
506 | |
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507 | B<LocalAddr> and B<LocalPort> - These parameters are passed directly |
508 | to IO::Socket to allow binding the socket to a local port. |
509 | |
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510 | B<Timeout> - Maximum time, in seconds, to wait for a response from the |
511 | SMTP server (default: 120) |
512 | |
513 | B<Debug> - Enable debugging information |
514 | |
515 | |
516 | Example: |
517 | |
518 | |
519 | $smtp = Net::SMTP->new('mailhost', |
520 | Hello => 'my.mail.domain' |
521 | Timeout => 30, |
522 | Debug => 1, |
523 | ); |
524 | |
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525 | =back |
526 | |
406c51ee |
527 | =head1 METHODS |
528 | |
529 | Unless otherwise stated all methods return either a I<true> or I<false> |
530 | value, with I<true> meaning that the operation was a success. When a method |
531 | states that it returns a value, failure will be returned as I<undef> or an |
532 | empty list. |
533 | |
534 | =over 4 |
535 | |
536 | =item banner () |
537 | |
538 | Returns the banner message which the server replied with when the |
539 | initial connection was made. |
540 | |
541 | =item domain () |
542 | |
543 | Returns the domain that the remote SMTP server identified itself as during |
544 | connection. |
545 | |
546 | =item hello ( DOMAIN ) |
547 | |
548 | Tell the remote server the mail domain which you are in using the EHLO |
549 | command (or HELO if EHLO fails). Since this method is invoked |
550 | automatically when the Net::SMTP object is constructed the user should |
551 | normally not have to call it manually. |
552 | |
553 | =item etrn ( DOMAIN ) |
554 | |
555 | Request a queue run for the DOMAIN given. |
556 | |
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557 | =item auth ( USERNAME, PASSWORD ) |
558 | |
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559 | Attempt SASL authentication. |
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560 | |
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561 | =item mail ( ADDRESS [, OPTIONS] ) |
562 | |
563 | =item send ( ADDRESS ) |
564 | |
565 | =item send_or_mail ( ADDRESS ) |
566 | |
567 | =item send_and_mail ( ADDRESS ) |
568 | |
569 | Send the appropriate command to the server MAIL, SEND, SOML or SAML. C<ADDRESS> |
570 | is the address of the sender. This initiates the sending of a message. The |
571 | method C<recipient> should be called for each address that the message is to |
572 | be sent to. |
573 | |
574 | The C<mail> method can some additional ESMTP OPTIONS which is passed |
575 | in hash like fashion, using key and value pairs. Possible options are: |
576 | |
577 | Size => <bytes> |
578 | Return => <???> |
579 | Bits => "7" | "8" |
580 | Transaction => <ADDRESS> |
581 | Envelope => <ENVID> |
582 | |
583 | |
584 | =item reset () |
585 | |
586 | Reset the status of the server. This may be called after a message has been |
587 | initiated, but before any data has been sent, to cancel the sending of the |
588 | message. |
589 | |
590 | =item recipient ( ADDRESS [, ADDRESS [ ...]] [, OPTIONS ] ) |
591 | |
592 | Notify the server that the current message should be sent to all of the |
593 | addresses given. Each address is sent as a separate command to the server. |
594 | Should the sending of any address result in a failure then the |
595 | process is aborted and a I<false> value is returned. It is up to the |
596 | user to call C<reset> if they so desire. |
597 | |
598 | The C<recipient> method can some additional OPTIONS which is passed |
599 | in hash like fashion, using key and value pairs. Possible options are: |
600 | |
601 | Notify => |
602 | SkipBad => ignore bad addresses |
603 | |
604 | If C<SkipBad> is true the C<recipient> will not return an error when a |
605 | bad address is encountered and it will return an array of addresses |
606 | that did succeed. |
607 | |
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608 | $smtp->recipient($recipient1,$recipient2); # Good |
609 | $smtp->recipient($recipient1,$recipient2, { SkipBad => 1 }); # Good |
610 | $smtp->recipient("$recipient,$recipient2"); # BAD |
611 | |
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612 | =item to ( ADDRESS [, ADDRESS [...]] ) |
613 | |
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614 | =item cc ( ADDRESS [, ADDRESS [...]] ) |
615 | |
616 | =item bcc ( ADDRESS [, ADDRESS [...]] ) |
617 | |
618 | Synonyms for C<recipient>. |
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619 | |
620 | =item data ( [ DATA ] ) |
621 | |
622 | Initiate the sending of the data from the current message. |
623 | |
624 | C<DATA> may be a reference to a list or a list. If specified the contents |
625 | of C<DATA> and a termination string C<".\r\n"> is sent to the server. And the |
626 | result will be true if the data was accepted. |
627 | |
628 | If C<DATA> is not specified then the result will indicate that the server |
629 | wishes the data to be sent. The data must then be sent using the C<datasend> |
630 | and C<dataend> methods described in L<Net::Cmd>. |
631 | |
632 | =item expand ( ADDRESS ) |
633 | |
634 | Request the server to expand the given address Returns an array |
635 | which contains the text read from the server. |
636 | |
637 | =item verify ( ADDRESS ) |
638 | |
639 | Verify that C<ADDRESS> is a legitimate mailing address. |
640 | |
641 | =item help ( [ $subject ] ) |
642 | |
643 | Request help text from the server. Returns the text or undef upon failure |
644 | |
645 | =item quit () |
646 | |
647 | Send the QUIT command to the remote SMTP server and close the socket connection. |
648 | |
649 | =back |
650 | |
16f7bb68 |
651 | =head1 ADDRESSES |
652 | |
653 | All methods that accept addresses expect the address to be a valid rfc2821-quoted address, although |
654 | Net::SMTP will accept accept the address surrounded by angle brackets. |
655 | |
656 | funny user@domain WRONG |
657 | "funny user"@domain RIGHT, recommended |
658 | <"funny user"@domain> OK |
659 | |
406c51ee |
660 | =head1 SEE ALSO |
661 | |
662 | L<Net::Cmd> |
663 | |
664 | =head1 AUTHOR |
665 | |
666 | Graham Barr <gbarr@pobox.com> |
667 | |
668 | =head1 COPYRIGHT |
669 | |
670 | Copyright (c) 1995-1997 Graham Barr. All rights reserved. |
671 | This program is free software; you can redistribute it and/or modify |
672 | it under the same terms as Perl itself. |
673 | |
686337f3 |
674 | =for html <hr> |
675 | |
edd55068 |
676 | I<$Id: //depot/libnet/Net/SMTP.pm#26 $> |
686337f3 |
677 | |
406c51ee |
678 | =cut |