X-Git-Url: http://www.git.stargrave.org/?p=public-inbox.git;a=blobdiff_plain;f=lib%2FPublicInbox%2FNNTP.pm;h=097fdb843fa663e2414b5393cd8196e7fbf4afc4;hp=0b43cdbc5b9308378d953b250e45f3e8da398ea6;hb=db7c206a4e2c71d08dd286d6dfa92431976e9693;hpb=443ab96a3b329556e26a57b02c7383d5faf536b3

diff --git a/lib/PublicInbox/NNTP.pm b/lib/PublicInbox/NNTP.pm
index 0b43cdbc..097fdb84 100644
--- a/lib/PublicInbox/NNTP.pm
+++ b/lib/PublicInbox/NNTP.pm
@@ -487,8 +487,9 @@ sub set_nntp_headers ($$) {
 	# *something* here is required for leafnode, try to follow
 	# RFC 5536 3.1.5...
 	$hdr->header_set('Path', $server_name . '!not-for-mail');
-
-	header_append($hdr, 'List-Post', "<mailto:$ibx->{-primary_address}>");
+	if (my $post_addr = $ibx->{-primary_address}) {
+		header_append($hdr, 'List-Post', "<mailto:$post_addr>");
+	}
 	if (my $url = $ibx->base_url) {
 		$mid = mid_escape($mid);
 		header_append($hdr, 'Archived-At', "<$url$mid/>");