8 use Time
::HiRes qw
(usleep gettimeofday tv_interval
);
9 use POSIX
qw(:sys_wait_h errno_h signal_h);
13 use Net
::Server
::PreFork
;
14 use Net
::Server
::SIG
qw(register_sig check_sigs);
25 use Mail
::SpamAssassin
;
26 use Mail
::SpamAssassin
::NetSet
;
31 use PMG
::ClusterConfig
;
47 use base
qw(Net::Server::PreFork);
49 my $opt_commandline = [$0, @ARGV];
50 my $opt_max_dequeue = 1;
51 my $opt_dequeue_time = 60*2;
53 my $opt_ext_port = 10024;
54 my $opt_int_port = 10023;
55 my $opt_inject_port = 10025;
62 my $prog_name = 'pmg-smtp-filter';
64 initlog
($prog_name, 'mail');
66 if (!GetOptions
('testmode=s' => \
$opt_testmode,
67 'pidfile=s' => \
$opt_pidfile,
68 'untrusted' => \
$opt_untrusted,
69 'database=s' => \
$opt_database)) {
74 $opt_pidfile = "/var/run/${prog_name}.pid" if !$opt_pidfile;
78 my $min_spare_servers = 0;
79 my $max_spare_servers = 0;
82 # create spool directories
83 PMG
::MailQueue
::create_sppoldirs
();
87 my $pmg_cfg = PMG
::Config-
>new();
89 my $demo = $pmg_cfg->get('admin', 'demo');
92 syslog
('info', 'demo mode detected - not starting server');
96 $max_servers = $pmg_cfg->get('mail', 'max_filters') + 2;
98 $min_spare_servers = 1;
99 $max_spare_servers = 4;
103 $opt_max_dequeue = 0 if $opt_testmode;
106 if (defined ($ENV{BOUND_SOCKETS
})) {
111 port
=> [ $opt_int_port, $opt_ext_port ],
113 min_servers
=> $min_servers,
114 max_servers
=> $max_servers,
115 min_spare_servers
=> $min_spare_servers,
116 max_spare_servers
=> $max_spare_servers,
117 max_requests
=> $max_requests,
118 serialize
=> 'flock',
119 max_dequeue
=> $opt_max_dequeue,
120 check_for_dequeue
=> $opt_dequeue_time,
122 pid_file
=> $opt_pidfile,
123 no_close_by_child
=> 1,
124 no_client_stdout
=> 1,
125 commandline
=> $opt_commandline,
128 $server_attr->{setsid
} = $daemonize if !$opt_testmode;
132 if (defined($opt_database)) {
133 $database = $opt_database;
135 $database = $opt_testmode ?
"Proxmox_testdb" : "Proxmox_ruledb";
138 $SIG{'__WARN__'} = sub {
142 syslog
('warning', "WARNING: %s", $t);
147 my ($self, $queue, $entity, $msginfo, $rule, $targets, $spaminfo) = @_;
150 sa_score
=> $queue->{sa_score
},
151 sa_hits
=> $queue->{sa_hits
},
152 sa_data
=> $queue->{sa_data
},
153 sa_max
=> $queue->{sa_max
}
157 'SUBJECT' => $entity->head->get ('subject', 0) || 'No Subject',
158 'RULE' => $rule->{name
},
159 'RULE_INFO' => $msginfo->{rule_info
},
160 'SENDER' => $msginfo->{sender
},
161 'SENDER_IP' => $msginfo->{xforward
}->{addr
},
162 'TARGETS' => join (', ', @$targets),
163 'RECEIVERS' => join (', ', @{$msginfo->{targets
}}),
164 'SPAMLEVEL' => $spaminfo->{sa_score
},
165 'SPAMSTARS' => '*' x
(($spaminfo->{sa_score
} || 0) > 100 ?
100 : $spaminfo->{sa_score
} || 0),
166 'ADMIN' => $self->{pmg_cfg
}->get('admin', 'email'),
167 'HOST' => $msginfo->{hostname
},
168 'DOMAIN' => $msginfo->{domain
},
169 'FQDN' => $msginfo->{fqdn
},
170 'MSGID' => $queue->{msgid
},
171 'VERSION' => PMG
::pmgcfg
::package() . "/" . PMG
::pmgcfg
::version
() . "/" . PMG
::pmgcfg
::repoid
(),
174 $vars->{__spaminfo
} = $spaminfo;
177 if ($queue->{vinfo_clam
}) {
178 $vars->{'VIRUS_INFO'} = "Virus Info:";
179 $vars->{'VIRUS_INFO'} .= " clam: $queue->{vinfo_clam}" if $queue->{vinfo_clam
};
181 $vars->{'VIRUS_INFO'} = '';
184 if ($queue->{vinfo
}) {
185 $vars->{'VIRUS_INFO'} = "Virus Info: $queue->{vinfo}\n";
187 $vars->{'VIRUS_INFO'} = '';
191 $vars->{'SPAM_HITS'} = $spaminfo->{sa_hits
};
193 $vars->{'SPAM_INFO'} = '';
194 my $sscores = $spaminfo->{sa_data
};
196 if (defined ($sscores) && @$sscores != -1) {
199 $sa_text = "Spam detection results: 100\n";
201 $sa_text = "Spam detection results: $spaminfo->{sa_score}\n";
204 foreach my $s (@$sscores) {
206 $sa_text .= sprintf ("%-22s %6s %s\n", $s->{rule
},
207 1, $s->{desc
} || '-');
209 $sa_text .= sprintf ("%-22s %6s %s\n", $s->{rule
},
210 $s->{score
}, $s->{desc
} || '-');
213 $vars->{'SPAM_INFO'} = $sa_text;
217 delete ($vars->{'ADMIN'});
218 #delete ($vars->{'SPAM_INFO'});
225 my ($self, $queue, $msginfo, $entity, $ldap) = @_;
231 my $matching_rules = [];
233 my $rulecache = $self->{rulecache
};
234 my $rules = $rulecache->rules ();
235 my $dbh = $self->{ruledb
}->{dbh
};
237 # first, we remove all conditional written 'X-' header attributes
238 foreach my $rule (@$rules) {
239 next if !$rule->{active
};
240 next if ($rule->{direction
} == 0) && $msginfo->{trusted
};
241 next if ($rule->{direction
} == 1) && !$msginfo->{trusted
};
243 my $actions = $rulecache->get_actions ($rule->{id
});
245 foreach my $action (@$actions) {
246 if ($action->isa ("PMG::RuleDB::ModField")) {
247 my $fname = $action->{field
};
248 next if $fname !~ m/^X-/i;
249 $entity->head->delete($fname);
255 foreach my $rule (@$rules) {
256 next if !$rule->{active
};
257 next if ($rule->{direction
} == 0) && $msginfo->{trusted
};
258 next if ($rule->{direction
} == 1) && !$msginfo->{trusted
};
260 # match from, when and what classes (not target dependent)
261 if (!($rulecache->from_match ($rule->{id
}, $msginfo->{sender
}, $msginfo->{xforward
}->{addr
}, $ldap) &&
262 $rulecache->when_match ($rule->{id
}, time))) {
266 $rule_marks{$rule->{id
}} =
267 $rulecache->what_match ($rule->{id
}, $queue, $entity, $msginfo, $dbh);
269 $rule_actions{$rule->{id
}} = $rulecache->get_actions ($rule->{id
});
270 my $fin = $rulecache->final ($rule->{id
});
273 foreach my $target (@{$msginfo->{targets
}}) {
274 next if $final->{$target};
275 next if !defined ($rule_marks{$rule->{id
}});
276 next if !defined ($rule_marks{$rule->{id
}}->{$target});
277 next if !defined ($rule_marks{$rule->{id
}}->{$target}->{marks
});
278 next if !$rulecache->to_match ($rule->{id
}, $target, $ldap);
280 $final->{$target} = $fin;
282 push @{$rule_targets{$rule->{id
}}}, $target;
286 # Compute rule_info (summary about matching rule)
287 # this can be used for debugging
289 foreach my $rule (@$rules) {
290 next if !$rule_targets{$rule->{id
}};
292 push @$matching_rules, $rule->{id
};
294 $rule_info .= "Rule: $rule->{name}\n";
296 foreach my $target (@{$rule_targets{$rule->{id
}}}) {
297 $rule_info .= " Receiver: $target\n";
299 foreach my $action (@{$rule_actions{$rule->{id
}}}) {
300 $rule_info .= " Action: " . $action->short_desc () . "\n";
304 $msginfo->{rule_info
} = $rule_info;
306 if ($msginfo->{testmode
}) {
307 my $vars = $self->get_prox_vars($queue, $entity, $msginfo, undef, [], undef);
308 my $fh = $msginfo->{test_fh
};
309 print $fh $rule_info;
314 my $mod_group = PMG
::ModGroup-
>new($entity, $msginfo->{targets
});
316 foreach my $rule (@$rules) {
317 my $targets = $rule_targets{$rule->{id
}};
321 foreach my $t (@$targets) {
322 if ($rule_marks{$rule->{id
}}->{$t} && $rule_marks{$rule->{id
}}->{$t}->{spaminfo
}) {
323 $spaminfo = $rule_marks{$rule->{id
}}->{$t}->{spaminfo
};
324 # we assume spam info is the same for all matching targets
329 my $vars = $self->get_prox_vars ($queue, $entity, $msginfo, $rule,
330 $rule_targets{$rule->{id
}}, $spaminfo);
334 sort {$a->priority <=> $b->priority} @{$rule_actions{$rule->{id
}}};
336 foreach my $action (@sorted_actions) {
337 $action->execute ($queue, $self->{ruledb
}, $mod_group,
338 $rule_targets{$rule->{id
}},
339 $msginfo, $vars, $rule_marks{$rule->{id
}}->{marks
}, $ldap);
340 last if $action->final;
344 # we deliver all mail not matched by any rule
345 # (default action = accept)
347 foreach my $target (@{$msginfo->{targets
}}) {
348 next if $final->{$target};
350 push @$unmatched, $target;
354 my $accept = PMG
::RuleDB
::Accept-
>new ();
355 $accept->execute ($queue, $self->{ruledb
}, $mod_group, $unmatched,
356 $msginfo, undef, undef, undef);
359 return $matching_rules;
362 # reload ruledb and pmg config
365 my $prop = $self->{server
};
367 if ($self->{ruledb
}) {
368 $self->log (0, "reloading configuration $database");
369 $self->{ruledb
}->close ();
372 $self->{pmg_cfg
} = PMG
::Config-
>new();
373 $self->{cinfo
} = PVE
::INotify
::read_file
("cluster.conf");
376 my $dbh = PMG
::DBTools
::open_ruledb
($database);
377 $self->{ruledb
} = PMG
::RuleDB-
>new ($dbh);
380 $self->{rulecache
} = PMG
::RuleCache-
>new ($self->{ruledb
});
386 sleep (10); # reduce restart rate when postgres is down
391 $self->{ldap
} = PMG
::LDAPSet-
>new_from_pmg_cfg($self->{pmg_cfg
}, 1);
393 $self->{reload_config
} = 0;
405 my ($self, $level, $msg, @therest) = @_;
406 my $prop = $self->{server
};
408 return if $level =~ /^\d+$/ && $level > $prop->{log_level
};
410 $level = $syslog_map->{$level} || $level;
412 syslog
($level, $msg, @therest);
414 syslog
($level, $msg);
420 my $prop = $self->{server
};
422 $prop->{log_level
} = 3;
424 $self->log (0, "Filter daemon (re)started (max. $max_servers processes)");
426 eval { PMG
::MailQueue
::cleanup_active
(); };
427 $self->log (0, "Cleanup failures: $@") if $@;
429 my $sig_set = POSIX
::SigSet-
>new;
430 $sig_set->addset (&POSIX
::SIGHUP
);
431 $sig_set->addset (&POSIX
::SIGCHLD
);
432 my $old_sig_set = POSIX
::SigSet-
>new();
434 sigprocmask
(SIG_UNBLOCK
, $sig_set, $old_sig_set);
436 my ($backup_umask) = umask;
438 my $pmg_cfg = PMG
::Config-
>new();
440 # Note: you need to restart the daemon when you change 'rbl_checks'
441 my $rbl_checks = $pmg_cfg->get('spam', 'rbl_checks');
443 $self->{sa
} = Mail
::SpamAssassin-
>new ({
445 local_tests_only
=> $opt_testmode || !$rbl_checks,
446 home_dir_for_helpers
=> '/root',
447 userstate_dir
=> '/root/.spamassassin',
448 dont_copy_prefs
=> 1,
449 stop_at_threshold
=> 0,
452 $self->{sa
}->compile_now;
454 alarm (0); # SA forgets to clear alarm in some cases
455 umask ($backup_umask);
456 initlog
($prog_name, 'mail');
459 # reloading server configuration
460 if (defined $prop->{children
}) {
461 foreach my $pid (keys %{$prop->{children
}}) {
462 kill (10, $pid); # SIGUSR1 childs
468 sub child_init_hook
{
471 $0 = "$prog_name child";
473 # $self->log (3, "init child");
476 $self->load_config ();
481 $self->child_finish_hook;
486 $self->{reload_config
} = 1;
490 sub child_finish_hook
{
493 # $self->log (3, "finish child");
494 $self->{ruledb
}->close () if $self->{ruledb
};
500 # do database maintainance here
502 $self->log (2, "starting database maintainance");
504 my ($csec, $usec) = gettimeofday
();
506 my $cinfo = PVE
::INotify
::read_file
("cluster.conf");
511 $dbh = PMG
::DBTools
::open_ruledb
($database);
516 $self->log (0, msgquote
("ERROR: $err"));
521 PMG
::Statistic
::update_stats
($dbh, $cinfo);
525 my ($csec_end, $usec_end) = gettimeofday
();
526 my $ptime = int (($csec_end-$csec)*1000 + ($usec_end - $usec)/1000);
529 $self->log (0, msgquote
($err));
531 $self->log (2, "end database maintainance ($ptime ms)");
534 $dbh->disconnect() if $dbh;
539 my ($self, $unpack, $entity, $msginfo, $queue) = @_;
544 if (($magic = $entity->{PMX_magic_ct
}) &&
545 ($path = $entity->{PMX_decoded_path
})) {
547 my $filename = basename
($path);
549 if (PMG
::Unpack
::is_archive
($magic)) {
550 $self->log (3, "$queue->{logid}: found archive '$filename' ($magic)");
552 my $start = [gettimeofday
];
554 $unpack->{mime
} = {};
557 $unpack->unpack_archive ($path, $magic);
560 $self->log (3, "$queue->{logid}: unpack failed - $@") if $@;
562 $entity->{PMX_content_types
} = $unpack->{mime
};
565 my $types = join (", ", sort keys (%{$entity->{PMX_content_types
}}));
566 my $fh = $msginfo->{test_fh
};
567 $filename =~ s/\d+/X/g if $filename =~ m/^msg-\d+-\d+.msg/;
568 print $fh "Types:$filename: $types\n" if $types;
571 my $elapsed = int(tv_interval
($start) * 1000);
573 $self->log (3, "$queue->{logid}: unpack archive '$filename' done ($elapsed ms)");
577 foreach my $part ($entity->parts) {
578 $self->unpack_entity ($unpack, $part, $msginfo, $queue);
584 my ($self, $smtp) = @_;
586 my ($csec, $usec) = gettimeofday
();
590 my $pmg_cfg = $self->{pmg_cfg
};
591 my $ldap = $self->{ldap
};
592 my $cinfo = $self->{cinfo
};
593 my $lcid = $cinfo->{local}->{cid
};
595 $msginfo->{test_fh
} = PMG
::AtomicFile-
>new("testresult.out", "w")
598 $msginfo->{trusted
} = $self->{trusted
};
601 # PHASE 1 - save incoming mail (already done)
604 $queue = $smtp->{queue
};
605 $queue->{sa
} = $self->{sa
};
607 $queue->{lic_valid
} = 1;
612 $msginfo->{testmode
} = $opt_testmode;
613 $msginfo->{sender
} = $smtp->{from
};
614 $msginfo->{xforward
} = $smtp->{xforward
};
615 $msginfo->{targets
} = $smtp->{to
};
617 $msginfo->{hostname
} = PVE
::INotify
::nodename
();
618 my $resolv = PVE
::INotify
::read_file
('resolvconf');
620 $msginfo->{domain
} = $resolv->{search
};
621 $msginfo->{fqdn
} = "$msginfo->{hostname}.$msginfo->{domain}";
622 $msginfo->{lcid
} = $lcid;
624 # $msginfo->{targets} is case sensitive,
625 # but pmail is always lower case!
627 foreach my $t (@{$msginfo->{targets
}}) {
629 if ($ldap && ($res = $ldap->account_info ($t))) {
630 $msginfo->{pmail
}->{$t} = $res->{pmail
};
632 $msginfo->{pmail
}->{$t} = lc ($t);
636 # PHASE 2 - parse mail
639 my $maxfiles = $pmg_cfg->get('clamav', 'archivemaxfiles');
641 my $entity = $queue->parse_mail($maxfiles);
643 $self->log (3, "$queue->{logid}: new mail message-id=%s", $queue->{msgid
});
645 # PHASE 3 - run external content analyzers
646 # (SPAM analyzer is run on demand later)
647 # on error: log error messages
650 # test for virus first
651 $queue->{vinfo
} = PMG
::Utils
::analyze_virus
(
652 $queue, $queue->{dataname
}, $pmg_cfg, $opt_testmode);
654 # always add this headers to incoming mails
655 # to enable user to report false negatives
656 if (!$msginfo->{trusted
}) {
657 if ($queue->{vinfo
}) {
658 $entity->head->replace('X-Proxmox-VInfo', $queue->{vinfo
});
662 # we unpack after virus scanning, because this is more secure.
663 # This way virus scanners gets the whole mail files and are able
664 # to detect phishing signature for example - which would not work
665 # if we decompose first and only analyze the decomposed attachments.
666 # Disadvantage is that we need to unpack more than
667 # once (bad performance).
669 # should we scan content types inside archives
671 my $rulecache = $self->{rulecache
};
673 my $scan_archives = 0;
675 if (($rulecache->{archivefilter_in
} && !$msginfo->{trusted
}) ||
676 ($rulecache->{archivefilter_out
} && $msginfo->{trusted
})) {
680 if ($scan_archives && !$queue->{vinfo
}) {
682 # unpack all archives - determine contained content types
684 my $decdir = $queue->{dumpdir
} . "/__decoded_archives";
687 my $start = [gettimeofday
];
692 # limits: We use clamav limit for maxfiles, and scan
693 # only 4 levels, timeout of 30 seconds
695 $unpack = PMG
::Unpack-
>new (
698 ctonly
=> 1, # only detect CTs
700 maxfiles
=> $maxfiles);
702 $self->unpack_entity ($unpack, $entity, $msginfo, $queue);
707 $unpack->cleanup() if $unpack;
709 my $elapsed = int(tv_interval
($start) * 1000);
712 $self->log (3, "$queue->{logid}: unpack archive failed ($elapsed ms) - $err");
716 # PHASE 4 - apply rules
717 # on error: exit (cleanup process should do the rest)
718 $msginfo->{maxspamsize
} = $pmg_cfg->get('spam', 'maxspamsize');
719 if ($msginfo->{maxspamsize
} <= 1024*64) {
720 $msginfo->{maxspamsize
} = 1024*64;
723 if ($msginfo->{trusted
}) {
724 my $hide = $pmg_cfg->get('mail', 'hide_received');
725 $entity->head->delete("Received") if $hide;
728 $matching_rules = $self->apply_rules($queue, $msginfo, $entity, $ldap);
733 $self->{errors
} = $queue->{errors
};
736 $self->{errors
} = 1 if $err;
742 my ($csec_end, $usec_end) = gettimeofday
();
744 int (($csec_end-$csec)*1000 + ($usec_end - $usec)/1000);
746 # PHASE 5 - log statistics
747 # on error: log error messages
750 my $dbh = $self->{ruledb
}->{dbh
};
752 foreach my $rid (@$matching_rules) {
753 $where .= $where ?
" OR ID = $rid" : "ID = $rid";
756 $dbh->do ("UPDATE Rule " .
757 "SET Count = Count + 1 " .
761 my $insert_cmds = "SELECT nextval ('cstatistic_id_seq');INSERT INTO CStatistic " .
762 "(CID, RID, ID, Time, Bytes, Direction, Spamlevel, VirusInfo, PTime, Sender) VALUES (" .
763 "$lcid, currval ('cstatistic_id_seq'), currval ('cstatistic_id_seq'),";
765 $insert_cmds .= $queue->{rtime
} . ',';
766 $insert_cmds .= $queue->{bytes
} . ',';
767 $insert_cmds .= $dbh->quote ($msginfo->{trusted
} ?
0 : 1) . ',';
768 $insert_cmds .= ($queue->{sa_score
} || 0) . ',';
769 $insert_cmds .= $dbh->quote ($queue->{vinfo
}) . ',';
770 $insert_cmds .= $time_total . ',';
771 $insert_cmds .= $dbh->quote ($msginfo->{sender
}) . ');';
773 foreach my $r (@{$msginfo->{targets
}}) {
774 my $tmp = $dbh->quote ($r);
775 my $blocked = $queue->{status
}->{$r} eq 'blocked' ?
1 : 0;
776 $insert_cmds .= "INSERT INTO CReceivers (CStatistic_CID, CStatistic_RID, Receiver, Blocked) " .
777 "VALUES ($lcid, currval ('cstatistic_id_seq'), $tmp, '$blocked'); ";
780 $dbh->do ($insert_cmds);
783 # save $err (because log clears $@)
786 $time_total = $time_total/1000;
788 my $ptspam = ($queue->{ptime_spam
} || 0)/1000;
789 my $ptclam = ($queue->{ptime_clam
} || 0)/1000;
791 $self->log (3, "$queue->{logid}: processing time: ${time_total} seconds ($ptspam, $ptclam)");
793 $msginfo->{test_fh
}->close if $opt_testmode;
799 sub process_request
{
801 my $prop = $self->{server
};
802 my $sock = $prop->{client
};
806 # make sure the ldap cache is up to date
807 $self->{ldap
}->update (1);
809 $self->load_config() if $self->{reload_config
};
811 $self->{trusted
} = 0;
812 if ($prop->{sockport
} == $opt_int_port && !$opt_untrusted) {
813 $self->{trusted
} = 1;
816 my $smtp = PMG
::SMTP-
>new ($sock);
818 my $maxcount = $max_requests - $prop->{requests
};
820 my $count = $smtp->loop (\
&handle_smtp
, $self, $maxcount);
822 $prop->{requests
} += $count - 1;
828 $self->log (0, $err) if $err;
830 kill(15, $prop->{ppid
}) if $opt_testmode;
832 my $mem = PVE
::ProcFSTools
::read_memory_usage
();
835 $self->log (0, "memory usage: $mem->{size} bytes");
837 if ($self->{errors
}) {
838 $self->log (0, "fast exit because of errors (free $mem->{size} bytes)");
840 } elsif ($mem->{size
} > (400*1024*1024)) {
841 $self->log (0, "fast exit to reduce server load (free $mem->{size} bytes)");
846 $self->done (1) if $err;
849 # test sig_hup with: for ((;;)) ;do kill -HUP `cat /var/run/${prog_name}.pid`; done;
850 # wrapper to avoid multiple calls to sig_hup
853 my $prop = $self->{server
};
855 return if defined ($prop->{_HUP
}); # do not call twice
857 $self->SUPER::sig_hup
();
860 sub restart_close_hook
{
863 my $sig_set = POSIX
::SigSet-
>new;
864 $sig_set->addset (&POSIX
::SIGHUP
);
865 $sig_set->addset (&POSIX
::SIGCHLD
); # to avoid zombies
866 my $old_sig_set = POSIX
::SigSet-
>new();
868 sigprocmask
(SIG_BLOCK
, $sig_set, $old_sig_set);
871 sub pre_server_close_hook
{
873 my $prop = $self->{server
};
875 if (defined $prop->{_HUP
}) {
876 undef $prop->{pid_file_unlink
};
879 if (defined $prop->{children
}) {
880 foreach my $pid (keys %{$prop->{children
}}) {
881 kill (1, $pid); # HUP childs
885 # nicely shutdown childs (give them max 30 seconds to shut down)
886 my $previous_alarm = alarm (30);
888 local $SIG{ALRM
} = sub { die "Timed Out!\n" };
891 1 while ((($pid = waitpid (-1, 0)) > 0) || ($! == EINTR
));
893 alarm ($previous_alarm);
896 # initialize mime system before fork
897 xdg_mime_get_mime_type_for_file
($0);
900 server
=> $server_attr,
903 if (!$opt_testmode) {
910 my $sender ='sender@proxtest.com';
911 my $targets = ['target1@proxtest.com',
912 'target2@proxtest.com',
913 'target3@proxtest.com'];
917 $smtp = Net
::SMTP-
>new ('127.0.0.1', Port
=> 10023);
922 # syslog ('info', "connected to " . $smtp->domain);
924 $smtp->mail ($sender);
925 $smtp->to (@$targets);
929 open (TMP
, $opt_testmode) ||
930 die "unable to upen file '$opt_testmode' - $! :ERROR";
932 $smtp->datasend ($_);
936 $smtp->datasend ("\n");
949 pmg-smtp-filter - the Proxmox mail filter
953 pmg-smtp-filter [-u] [-t testfile]
957 Documentation is available at www.proxmox.com