lib/PublicInbox/Mbox.pm   | 10 ++++------
 lib/PublicInbox/Msgmap.pm | 11 -----------
 lib/PublicInbox/NNTP.pm   |  2 +-
 lib/PublicInbox/Over.pm   | 11 +++++++++++
 t/extindex-psgi.t         |  3 +++

diff --git a/lib/PublicInbox/Mbox.pm b/lib/PublicInbox/Mbox.pm
index 844099aa60b99c5ab04a942ba61f9b027b22b5e6..f72af26baeadc9602bbccbd75a6e2395bcf7bdae 100644
--- a/lib/PublicInbox/Mbox.pm
+++ b/lib/PublicInbox/Mbox.pm
@@ -161,19 +161,17 @@ 		while ((my $num = shift @$ids)) {
 			my $smsg = $ctx->{over}->get_art($num) or next;
 			return $smsg;
 		}
-		$ctx->{ids} = $ids = $ctx->{mm}->ids_after(\($ctx->{prev}));
+		$ctx->{ids} = $ids = $ctx->{over}->ids_after(\($ctx->{prev}));
 	} while (@$ids);
 }
 
 sub mbox_all_ids {
 	my ($ctx) = @_;
-	my $ibx = $ctx->{ibx};
 	my $prev = 0;
-	my $mm = $ctx->{mm} = $ibx->mm;
-	my $ids = $mm->ids_after(\$prev) or return
+	$ctx->{over} = $ctx->{ibx}->over or
+		return PublicInbox::WWW::need($ctx, 'Overview');
+	my $ids = $ctx->{over}->ids_after(\$prev) or return
 		[404, [qw(Content-Type text/plain)], ["No results found\n"]];
-	$ctx->{over} = $ibx->over or
-		return PublicInbox::WWW::need($ctx, 'Overview');
 	$ctx->{ids} = $ids;
 	$ctx->{prev} = $prev;
 	require PublicInbox::MboxGz;
diff --git a/lib/PublicInbox/Msgmap.pm b/lib/PublicInbox/Msgmap.pm
index 16a9a476407f7ff30b722c7501d85a76d6f5c842..3887a9e6b2c2264a468e9f7903ecf1e68af14b47 100644
--- a/lib/PublicInbox/Msgmap.pm
+++ b/lib/PublicInbox/Msgmap.pm
@@ -189,17 +189,6 @@ )
 
 }
 
-# used by NNTP.pm
-sub ids_after {
-	my ($self, $num) = @_;
-	my $ids = $self->{dbh}->selectcol_arrayref(<<'', undef, $$num);
-SELECT num FROM msgmap WHERE num > ?
-ORDER BY num ASC LIMIT 1000
-
-	$$num = $ids->[-1] if @$ids;
-	$ids;
-}
-
 sub msg_range {
 	my ($self, $beg, $end, $cols) = @_;
 	$cols //= 'num,mid';
diff --git a/lib/PublicInbox/NNTP.pm b/lib/PublicInbox/NNTP.pm
index aea04c05464b28b30d5e8d7a713e5da0446c9282..ea9ce18358f984e546d86b501defde569d8ac4ec 100644
--- a/lib/PublicInbox/NNTP.pm
+++ b/lib/PublicInbox/NNTP.pm
@@ -210,7 +210,7 @@ }
 
 sub listgroup_all_i {
 	my ($self, $num) = @_;
-	my $ary = $self->{ibx}->mm(1)->ids_after($num);
+	my $ary = $self->{ibx}->over(1)->ids_after($num);
 	scalar(@$ary) or return;
 	more($self, join("\r\n", @$ary));
 	1;
diff --git a/lib/PublicInbox/Over.pm b/lib/PublicInbox/Over.pm
index 58fdea0e197ce4c54364a0e45befc89560284f6a..19da056a10aff5de4455e80c1e30b03190352258 100644
--- a/lib/PublicInbox/Over.pm
+++ b/lib/PublicInbox/Over.pm
@@ -371,4 +371,15 @@ }
 
 sub blob_exists { oidbin_exists($_[0], pack('H*', $_[1])) }
 
+# used by NNTP.pm
+sub ids_after {
+	my ($self, $num) = @_;
+	my $ids = dbh($self)->selectcol_arrayref(<<'', undef, $$num);
+SELECT num FROM over WHERE num > ?
+ORDER BY num ASC LIMIT 1000
+
+	$$num = $ids->[-1] if @$ids;
+	$ids;
+}
+
 1;
diff --git a/t/extindex-psgi.t b/t/extindex-psgi.t
index b9acc9793292b6d3b7a7189853c01b75af186279..d47616417a525b5b48a468141d8e03a25863c0d5 100644
--- a/t/extindex-psgi.t
+++ b/t/extindex-psgi.t
@@ -52,6 +52,9 @@ 	close $fh or xbail $!;
 	my $cfg = PublicInbox::Config->git_config_dump($f);
 	is($?, 0, 'no errors from git-config parsing');
 	ok($cfg->{'extindex.all.topdir'}, 'extindex.topdir defined');
+
+	$res = $cb->(GET('/all/all.mbox.gz'));
+	is($res->code, 200, 'all.mbox.gz');
 };
 test_psgi(sub { $www->call(@_) }, $client);
 %$env = (%$env, TMPDIR => $tmpdir, PI_CONFIG => $pi_config);