Improve fail2ban docs and fix a typo (#2126)

Co-authored-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>

docs/content/config/security/fail2ban.md

@@ -4,10 +4,30 @@ hide:
   - toc # Hide Table of Contents for this page
 ---
 
-Fail2Ban is installed automatically and bans IP addresses for 3 hours after 3 failed attempts in 10 minutes by default. If you want to change this, you can easily edit [`config/fail2ban-jail.cf`][github-file-f2bjail].
+Fail2Ban is installed automatically and bans IP addresses for 3 hours after 3 failed attempts in 10 minutes by default.
+
+## Configuration files
+
+If you want to change this, you can easily edit [`config/fail2ban-jail.cf`][github-file-f2bjail].
 
 You can do the same with the values from `fail2ban.conf`, e.g `dbpurgeage`. In that case you need to edit [`config/fail2ban-fail2ban.cf`][github-file-f2bconfig].
 
+The configuration files need to be located at the root of the `/tmp/docker-mailserver/` volume bind.
+
+This following configuration files from `/tmp/docker-mailserver/` will be copied at boot time.
+
+- `fail2ban-jail.cf` -> `/etc/fail2ban/jail.d/user-jail.local`
+- `fail2ban-fail2ban.cf` -> `/etc/fail2ban/fail2ban.local`
+
+### Docker-compose config
+
+Example configuration volume bind:
+
+```yaml
+    volumes:
+      - ./config/:/tmp/docker-mailserver/
+```
+
 !!! attention
     The mail container must be launched with the `NET_ADMIN` capability in order to be able to install the iptable rules that actually ban IP addresses.
 
@@ -28,8 +48,24 @@ t initialize iptables table `filter': Permission denied (you must be root)\nPerh
 j f2b-postfix
 ```
 
+## Manage bans
+
 You can also manage and list the banned IPs with the [`setup.sh`][docs-setupsh] script.
 
+### List bans
+
+```sh
+./setup.sh debug fail2ban
+```
+
+### Un-ban
+
+Here `192.168.1.15` is our banned IP.
+
+```sh
+./setup.sh debug fail2ban unban 192.168.1.15
+```
+
 [docs-setupsh]: ../setup.sh.md
 [github-file-f2bjail]: https://github.com/docker-mailserver/docker-mailserver/blob/master/config/fail2ban-jail.cf
 [github-file-f2bconfig]: https://github.com/docker-mailserver/docker-mailserver/blob/master/config/fail2ban-fail2ban.cf

target/amavis/conf.d/62-improve_privacy_remove_headers

@@ -3,7 +3,7 @@ use strict;
 # disable the "Received" headers to be added to the mail header
 $allowed_added_header_fields{lc('Received')} = 0;
 
-# Hide with whay virus scanner we scan
+# Hide with what virus scanner we scan
 $X_HEADER_LINE = "Yes";
 
 #------------ Do not modify anything below this line -------------