qpsmtpd/plugins/check_badmailfrom
Robert Spier 9422b16c0f Inspired by Justin E@Apache...
- log the fact that badmailfrom is rejecting
- emacs header
- formatting tweak


git-svn-id: https://svn.perl.org/qpsmtpd/trunk@352 958fd67b-6ff1-0310-b445-bb7760255be9
2004-11-27 18:40:54 +00:00

61 lines
1.6 KiB
Perl

# -*- perl -*-
=head1 NAME
check_badmailfrom - checks the standard badmailfrom config
=head1 DESCRIPTION
Reads the "badmailfrom" configuration like qmail-smtpd does. From the
qmail-smtpd docs:
"Unacceptable envelope sender addresses. qmail-smtpd will reject every
recipient address for a message if the envelope sender address is
listed in badmailfrom. A line in badmailfrom may be of the form
@host, meaning every address at host."
=head1 NOTES
According to the SMTP protocol, we can't reject until after the RCPT
stage, so store it until later.
=cut
sub register {
my ($self, $qp) = @_;
$self->register_hook("mail", "mail_handler");
$self->register_hook("rcpt", "rcpt_handler");
}
sub mail_handler {
my ($self, $transaction, $sender) = @_;
my @badmailfrom = $self->qp->config("badmailfrom")
or return (DECLINED);
return (DECLINED) unless ($sender->format ne "<>"
and $sender->host && $sender->user);
my $host = lc $sender->host;
my $from = lc($sender->user) . '@' . $host;
for my $bad (@badmailfrom) {
$bad =~ s/^\s*(\S+).*/$1/;
next unless $bad;
$bad = lc $bad;
warn "Bad badmailfrom config: No \@ sign in $bad\n" and next unless $bad =~ m/\@/;
$transaction->notes('badmailfrom', "Mail from $bad not accepted here")
if ($bad eq $from) || (substr($bad,0,1) eq '@' && $bad eq "\@$host");
}
return (DECLINED);
}
sub rcpt_handler {
my ($self, $transaction, $rcpt) = @_;
my $note = $transaction->notes('badmailfrom');
if ($note) {
$self->log(LOGINFO, $note);
return (DENY, $note);
}
return (DECLINED);
}