Remove obsolete information

docs/firststeps-syslog.md

@@ -1,78 +0,0 @@
-Enable Rsyslog to receive logs on 524/tcp at `rsyslog.conf`:
-
-```
-# This setting depends on your Rsyslog version and configuration format.
-# For most Debian derivates it will work like this...
-$ModLoad imtcp
-$TCPServerAddress 127.0.0.1
-$InputTCPServerRun 524
-
-# ...while for Ubuntu 16.04 it looks like this:
-module(load="imtcp")
-input(type="imtcp" address="127.0.0.1" port="524")
-
-# No matter your Rsyslog version, you should set this option to off
-# if you plan to use Fail2ban
-$RepeatedMsgReduction off
-```
-
-Restart rsyslog after enabling the TCP listener.
-
-Now setup Docker daemon to start with the syslog driver.
-This enables the syslog driver for all containers!
-
-Linux users can add or change the configuration in `/etc/docker/daemon.json`. Windows users please have a look at the [docker documentation](https://docs.docker.com/engine/reference/commandline/dockerd//#windows-configuration-file) :
-```
-{
-...
-    "log-driver": "syslog",
-    "log-opts": {
-        "syslog-address": "tcp://127.0.0.1:524"
-    }
-...
-}
-
-```
-
-!!! info
-    If you prefere the udp protocol use:
-    
-    ```
-    $ModLoad imudp
-    $UDPServerRun 524
-    ```
-    
-    at `rsyslog.conf` and `"syslog-address": "udp://127.0.0.1:524"` at `daemon.json`.
-    
-Restart the Docker daemon and run `docker-compose down && docker-compose up -d` to recreate the containers.
-
-
-### Fail2ban
-
-**This is a subsection of "Log to Syslog", which is required for Fail2ban to work.**
-
-Open `/etc/fail2ban/filter.d/common.conf` and search for the prefix_line parameter, change it to ".*":
-
-```
-__prefix_line = .*
-```
-
-Create `/etc/fail2ban/jail.d/dovecot.conf`...
-```
-[dovecot]
-enabled = true
-filter  = dovecot
-logpath = /var/log/syslog
-chain = FORWARD
-```
-
-and `jail.d/postfix-sasl.conf`:
-```
-[postfix-sasl]
-enabled = true
-filter  = postfix-sasl
-logpath = /var/log/syslog
-chain = FORWARD
-```
-
-Restart Fail2ban.

docs/prerequesite-dns.md

@@ -57,7 +57,6 @@ _pop3._tcp          IN SRV     0 1 110 mail.example.org.
 _pop3s._tcp         IN SRV     0 1 995 mail.example.org.
 _submission._tcp    IN SRV     0 1 587 mail.example.org.
 _smtps._tcp         IN SRV     0 1 465 mail.example.org.
-_autoconfig._tcp    IN SRV     0 1 443 autoconfig.example.org.
 _autodiscover._tcp  IN SRV     0 1 443 autodiscover.example.org.
 ```
 

docs/u_e-autodiscover_config.md

@@ -1,5 +1,9 @@
 This disables ActiveSync in the autodiscover service for Outlook and configures it with IMAP and SMTP instead:
 
-Open `data/web/autodiscover.php` and set `'useEASforOutlook' => 'yes'` to `'useEASforOutlook' => 'no'`.
+Open or create `data/web/inc/vars.local.inc.php` and paste the following code-block at the last line:
+> Note: make sure that the file starts with `<?php`.
+````
+$config['useEASforOutlook'] = 'no';
+````
 
-To always use IMAP and SMTP instead of EAS, set `'autodiscoverType' => 'imap'`.
+Tell Outlook clients to use SMTP and IMAP `'useEASforOutlook' => 'yes'` to `'useEASforOutlook' => 'no'`.

docs/u_e-mailcow_ui-config.md

@@ -1,4 +1,5 @@
 Several configuration parameters of the mailcow UI can be changed by creating a file `data/web/inc/vars.local.inc.php` which overrides defaults settings found in `data/web/inc/vars.inc.php`.
+For example, these are used by `data/web/autodiscover.php`.
 
 The local configuration file is persistent over updates of mailcow. Try not to change values inside `data/web/inc/vars.inc.php`, but use them as template for the local override.
 

mkdocs.yml

@@ -30,7 +30,6 @@ pages:
   - 'Rspamd Web UI': 'firststeps-rspamd_ui.md'
   - 'Reverse Proxy': 'firststeps-rp.md'
   - 'Setup a relayhost': 'firststeps-relayhost.md'
-  - 'Log to Syslog': 'firststeps-syslog.md'
   - 'Local MTA on Docker host': 'firststeps-local_mta.md'
   - 'Sender and receiver model': 'firststeps-sender_rcv.md'
 - 'Debugging & Troubleshooting':
@@ -59,7 +58,7 @@ pages:
   - 'Docker':
       - 'Customize Dockerfiles': 'u_e-docker-cust_dockerfiles.md'
       - 'Docker Compose Bash Completion': 'u_e-docker-dc_bash_compl.md'
-  - 'Why bind9?': 'u_e-why_bind9.md'
+  - 'Why a DNS recursor?': 'u_e-why_dns_recursor.md'
   - 'Backup & Restore':
       - 'Backup Maildir': 'u_e-backup_restore-maildir.md'
       - 'MySQL': 'u_e-backup_restore-mysql.md'