From 5ff96a2b8fc04df32d025c8040499e1b8cd49190 Mon Sep 17 00:00:00 2001
From: Zhang Huangbin
/etc/fail2ban/filters.d/postfix.iredmail.conf
or
-/usr/local/etc/fail2ban/filters.d/postfix.iredmail.conf
(on FreeBSD), find
+/etc/fail2ban/filter.d/postfix.iredmail.conf
or
+/usr/local/etc/fail2ban/filter.d/postfix.iredmail.conf
(on FreeBSD), find
below line under [Definition]
section: lost connection after AUTH from (.*)\[<HOST>\]
diff --git a/upgrade/0-upgrade.iredmail.0.9.1-0.9.2.md b/upgrade/0-upgrade.iredmail.0.9.1-0.9.2.md
index 08e0d5c8..1f6fbf69 100644
--- a/upgrade/0-upgrade.iredmail.0.9.1-0.9.2.md
+++ b/upgrade/0-upgrade.iredmail.0.9.1-0.9.2.md
@@ -343,8 +343,8 @@ update SQL database and exit silently.
### [OPTIONAL] Update one Fail2ban filter regular expression to help catch DoS attacks to SMTP service
-1. Open file `/etc/fail2ban/filters.d/postfix.iredmail.conf` or
-`/usr/local/etc/fail2ban/filters.d/postfix.iredmail.conf` (on FreeBSD), find
+1. Open file `/etc/fail2ban/filter.d/postfix.iredmail.conf` or
+`/usr/local/etc/fail2ban/filter.d/postfix.iredmail.conf` (on FreeBSD), find
below line under `[Definition]` section:
```