From c2ecf35a6a43818977c3814976c24ec7368cf784 Mon Sep 17 00:00:00 2001
From: Zhang Huangbin <Zhang Huangbin@localhost>
Date: Wed, 24 Jan 2018 18:32:06 +0800
Subject: [PATCH] Update en_US/howto/sql.user.mail.forwarding.md

---
 en_US/howto/sql.user.mail.forwarding.md | 7 +++++++
 html/sql.user.mail.forwarding.html      | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/en_US/howto/sql.user.mail.forwarding.md b/en_US/howto/sql.user.mail.forwarding.md
index fff9e560..fdc85124 100644
--- a/en_US/howto/sql.user.mail.forwarding.md
+++ b/en_US/howto/sql.user.mail.forwarding.md
@@ -59,6 +59,13 @@ INSERT INTO forwardings (address, forwarding,
 To save a copy of forwarded email in mailbox, please add your own email address
 as a forwarding destination like below:
 
+!!! attention
+
+    This SQL record exists by default, but it's a good idea to make sure it
+    exists. If it exists, you will get error like `ERROR 1062
+    (23000): Duplicate entry 'user@domain.com-user@domain.com' for key
+    'address'`, don't panic.
+
 ```
 INSERT INTO forwardings (address, forwarding,
                          domain, dest_domain,
diff --git a/html/sql.user.mail.forwarding.html b/html/sql.user.mail.forwarding.html
index 113d7fce..b55ad6a5 100644
--- a/html/sql.user.mail.forwarding.html
+++ b/html/sql.user.mail.forwarding.html
@@ -75,6 +75,13 @@ INSERT INTO forwardings (address, forwarding,
 
 <p>To save a copy of forwarded email in mailbox, please add your own email address
 as a forwarding destination like below:</p>
+<div class="admonition attention">
+<p class="admonition-title">Attention</p>
+<p>This SQL record exists by default, but it's a good idea to make sure it
+exists. If it exists, you will get error like <code>ERROR 1062
+(23000): Duplicate entry 'user@domain.com-user@domain.com' for key
+'address'</code>, don't panic.</p>
+</div>
 <pre><code>INSERT INTO forwardings (address, forwarding,
                          domain, dest_domain,
                          is_forwarding, active)