From 99f40596ce0881af49cc8bf61e588cdb55a2af30 Mon Sep 17 00:00:00 2001
From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Sun, 3 Apr 2022 16:33:40 +0100
Subject: [PATCH] Docs: allow for multiple return from dnsdb PTR lookup

---
 doc/doc-docbook/spec.xfpt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 6c885176f..0ac98d668 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -25508,7 +25508,8 @@ servers or different local IP addresses. For example, if you want the string
 that is used for &%helo_data%& to be obtained by a DNS lookup of the outgoing
 interface address, you could use this:
 .code
-helo_data = ${lookup dnsdb{ptr=$sending_ip_address}{$value}\
+helo_data = ${lookup dnsdb{ptr=$sending_ip_address} \
+  {${listextract{1}{<\n $value}}} \
   {$primary_hostname}}
 .endd
 The use of &%helo_data%& applies both to sending messages and when doing
-- 
2.30.2