101 lines
2.4 KiB
Perl
101 lines
2.4 KiB
Perl
#!perl -w
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=head1 NAME
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rcpt_ok
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=head1 SYNOPSIS
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Validate that we accept mail for a recipient using a qmail rcpthosts file
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=head1 DESCRIPTION
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Check the envelope recipient hostname and determine if we accept mail to that host.
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This is functionally identical to qmail's rcpthosts implementation, consulting
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both rcpthosts and morercpthosts.cdb.
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=head1 CONFIGURATION
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It should be configured as the _LAST_ recipient plugin!
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=cut
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use strict;
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use warnings;
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use Qpsmtpd::Constants;
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use Qpsmtpd::DSN;
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sub hook_rcpt {
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my ($self, $transaction, $recipient, %param) = @_;
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return OK if $self->is_immune(); # relay_client or whitelist
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# Allow 'no @' addresses for 'postmaster' and 'abuse'
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# qmail-smtpd will do this for all users without a domain, but we'll
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# be a bit more picky. Maybe that's a bad idea.
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my $host = $self->get_rcpt_host($recipient) or return OK;
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return OK if $self->is_in_rcpthosts($host);
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return OK if $self->is_in_morercpthosts($host);
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# default of relaying_denied is obviously DENY,
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# we use the default "Relaying denied" message...
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return Qpsmtpd::DSN->relaying_denied();
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}
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sub is_in_rcpthosts {
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my ($self, $host) = @_;
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my @rcpt_hosts = ($self->qp->config('me'), $self->qp->config('rcpthosts'));
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# Check if this recipient host is allowed
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for my $allowed (@rcpt_hosts) {
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$allowed =~ s/^\s*(\S+)/$1/;
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if ($host eq lc $allowed) {
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$self->log(LOGINFO, "pass: $host in rcpthosts");
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return 1;
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}
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if (substr($allowed, 0, 1) eq '.' and $host =~ m/\Q$allowed\E$/i) {
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$self->log(LOGINFO, "pass: $host in rcpthosts as $allowed");
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return 1;
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}
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}
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return;
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}
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sub is_in_morercpthosts {
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my ($self, $host) = @_;
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my $more_rcpt_hosts = $self->qp->config('morercpthosts', 'map');
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if (exists $more_rcpt_hosts->{$host}) {
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$self->log(LOGINFO, "pass: $host found in morercpthosts");
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return 1;
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}
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$self->log(LOGINFO, "fail: $host not in morercpthosts");
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return;
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}
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sub get_rcpt_host {
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my ($self, $recipient) = @_;
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return if !$recipient; # Qpsmtpd::Address couldn't parse the recipient
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if ($recipient->host) {
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return lc $recipient->host;
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}
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# no host portion exists
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my $user = $recipient->user or return;
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if (lc $user eq 'postmaster' || lc $user eq 'abuse') {
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return $self->qp->config('me');
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}
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return;
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}
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