but may be disabled via
L<public-inbox-config(5)/publicinboxmda.spamcheck>
+=head1 OPTIONS
+
+=over 8
+
+=item --no-precheck
+
+By default, public-inbox-mda does some simple checks before
+invoking L<spamc(1)> since it is intended to receive mail before
+it goes to a mailing list.
+
+However, some users prefer to use public-inbox-mda to mirror
+mailing lists. This option exists to support those users.
+
+Using this option, the following prechecks are disabled:
+
+ * multiple Message-IDs
+ * non-existent Message-IDs
+ * Message-IDs longer than 244 characters long
+ * From: header shorter than 3 characters
+ * Subject: header shorter than 2 characters
+ * unusable Date: headers
+ * inbox address specified in To: or Cc: header
+
+=back
+
=head1 ENVIRONMENT
=over 8
# Mail delivery agent for public-inbox, run from your MTA upon mail delivery
use strict;
use warnings;
-my $usage = 'public-inbox-mda < rfc2822_message';
+my $usage = 'public-inbox-mda [OPTIONS] < rfc2822_message';
+my $precheck = grep(/\A--no-precheck\z/, @ARGV) ? 0 : 1;
my ($ems, $emm);
sub do_exit {
$dst = PublicInbox::InboxWritable->new($dst);
# pre-check, MDA has stricter rules than an importer might;
-do_exit(0) unless PublicInbox::MDA->precheck($simple, $dst->{address});
+if ($precheck && !PublicInbox::MDA->precheck($simple, $dst->{address})) {
+ do_exit(0);
+}
$simple = undef;
my $spam_ok;
if ($spamc) {
my $path = mid2path($mid);
my $msg = `git --git-dir=$maindir cat-file blob HEAD:$path`;
like($msg, qr/\Q$list_id\E/, 'delivered message w/ List-ID matches');
+
+ # try a message w/o precheck
+ $simple = Email::Simple->new(<<EOF);
+To: You <you\@example.com>
+List-Id: <$list_id>
+
+this message would not be accepted without --no-precheck
+EOF
+ $in = $simple->as_string;
+ my ($out, $err) = ('', '');
+ IPC::Run::run([$mda, '--no-precheck'], \$in, \$out, \$err);
+ is($?, 0, 'mda OK with List-Id match and --no-precheck');
+ my $cur = `git --git-dir=$maindir diff HEAD~1..HEAD`;
+ like($cur, qr/this message would not be accepted without --no-precheck/,
+ '--no-precheck delivered message anyways');
}
done_testing();