Update prerequisite-system.md

Dieser Commit ist enthalten in:
André Peters 2019-01-27 12:43:41 +01:00 committet von GitHub
Ursprung 361f75390c
Commit 01359507b6
Es konnte kein GPG-SchlĂĽssel zu dieser Signatur gefunden werden
GPG-SchlĂĽssel-ID: 4AEE18F83AFDEB23

Datei anzeigen

@ -52,19 +52,6 @@ To bind a service to an IP address, you can prepend the IP like this: `SMTP_PORT
**Important**: You cannot use IP:PORT bindings in HTTP_PORT and HTTPS_PORT. Please use `HTTP_PORT=1234` and `HTTP_BIND=1.2.3.4` instead. **Important**: You cannot use IP:PORT bindings in HTTP_PORT and HTTPS_PORT. Please use `HTTP_PORT=1234` and `HTTP_BIND=1.2.3.4` instead.
To unblock firewalls using ufw you can use the following commands:
```
# ufw allow 25
# ufw allow 80
# ufw allow 110
# ufw allow 143
# ufw allow 443
# ufw allow 465
# ufw allow 587
# ufw allow 993
# ufw allow 995
```
## Date and Time ## Date and Time
To ensure that you have the correct date and time setup on your system, please check the output of `timedatectl status`: To ensure that you have the correct date and time setup on your system, please check the output of `timedatectl status`:
@ -96,3 +83,22 @@ To enable NTP you need to run the command `timedatectl set-ntp true`. You also n
[Time] [Time]
Servers=0.pool.ntp.org 1.pool.ntp.org 2.pool.ntp.org 3.pool.ntp.org Servers=0.pool.ntp.org 1.pool.ntp.org 2.pool.ntp.org 3.pool.ntp.org
``` ```
## Hetzner Cloud (and probably others)
Check `/etc/network/interfaces.d/50-cloud-init.cfg` and change the IPv6 interface from eth0:0 to eth0:
```
# Wrong:
auto eth0:0
iface eth0:0 inet6 static
# Right:
auto eth0
iface eth0 inet6 static
```
Reboot or restart the interface.
# MTU on OpenStack
Please check your MTU and set it accordingly in docker-compose.yml. See **4.1** in https://mailcow.github.io/mailcow-dockerized-docs/install/