Added links, removed WARNING from install

docs/install.md

@@ -1,5 +1,3 @@
-**WARNING**: Please use Ubuntu 16.04 instead of Debian 8 or [switch to the kernel 4.9 from jessie backports](https://packages.debian.org/jessie-backports/linux-image-amd64) because there is a bug (kernel panic) with the kernel 3.16 when running docker containers with healthchecks! Full details here: [github.com/docker/docker/issues/30402](https://github.com/docker/docker/issues/30402) and [forum.mailcow.email/t/solved-mailcow-docker-causes-kernel-panic-edit/448](https://forum.mailcow.email/t/solved-mailcow-docker-causes-kernel-panic-edit/448)
-
 You need Docker and Docker Compose.
 
 1\. Learn how to install [Docker](https://docs.docker.com/engine/installation/linux/) and [Docker Compose](https://docs.docker.com/compose/install/).

docs/requirements.md

@@ -1,15 +1,17 @@
 Before you run **mailcow: dockerized**, there are a few requirements that you should check:
 
-- **WARNING**: When you want to run the dockerized version on your Debian 8 (Jessie) box you should consider switching to the kernel 4.9 from jessie backports because there is a bug (kernel panic) with the kernel 3.16 when running docker containers with *healthchecks*!
+- **WARNING**: When you want to run the dockerized version on your Debian 8 (Jessie) box you should [switch to the kernel 4.9 from jessie backports](https://packages.debian.org/jessie-backports/linux-image-amd64) because there is a bug (kernel panic) with the kernel 3.16 when running docker containers with *healthchecks*!
-- Mailcow: dockerized requires some ports to be open for incomming connections, so make sure that your firewall is not bloking these. Also make sure that no other application is interferring with mailcow's configuration.
+  Full more details read: [github.com/docker/docker/issues/30402](https://github.com/docker/docker/issues/30402) and [forum.mailcow.email/t/solved-mailcow-docker-causes-kernel-panic-edit/448](https://forum.mailcow.email/t/solved-mailcow-docker-causes-kernel-panic-edit/448)
-- A correct DNS setup is crucial to every good mailserver setup, so please make sure you got at least the basis covered bevore you begin!
+- Mailcow: dockerized requires [some ports](#default-ports) to be open for incomming connections, so make sure that your firewall is not bloking these. Also make sure that no other application is interferring with mailcow's configuration.
+- A correct DNS setup is crucial to every good mailserver setup, so please make sure you got at least the [basics](dns/#the-minimal-dns-configuration) covered bevore you begin!
+- Make sure that your system has a correct date and time setup. This is crucial for stuff like two factor TOTP authentication.
 
 ## Minimum System Resources
 
 Please make sure that your system has at least the following resources:
 
-| Resource                | mailcow-dockerized |
+| Resource                | mailcow: dockerized |
-| ----------------------- | ------------------ |
+| ----------------------- | ------------------- |
 | CPU                     | 1 GHz               |
 | RAM                     | 1 GiB               |
 | Disk                    | 5 GiB               |
@@ -25,6 +27,8 @@ netstat -tulpn | grep -E -w '25|80|110|143|443|465|587|993|995'
 
 If this command returns any results please remove or stop the application running on that port. You may also adjust mailcows ports via the `mailcow.conf` configuration file.
 
+### Default Ports
+
 If you have a firewall already up and running please make sure that these ports are open for incomming connections:
 
 | Service             | Protocol | Port   | Container       |