hMailServer Anti Spam Settings

Antispam->General Spam Mark Threshold = 6 Spam Delete Threshold = 9 Max Message Size to Scan = 1024 All tickboxes selected. Antispam->Spam Tests Use SPF = 3 Check host in HELO = 2 Check DNS MX = 2 Verify DKIM = 5 Antispam->Tarpitting Count 0 Delay 15 Antispam->DNS Blacklists | 127.0.0.* | Server rejected… Read More »

SSH Authentication Key Setup Ubuntu

Here is how to set up key based authentication for OpenSSH server on Ubuntu 14.04 First, generate your keypair for the account.  You can leave the private key password blank if you do not want to enter one every time. cperson@WEB:~/.ssh$ ssh-keygen -t rsa Copy your private key to your computer.  You may need to… Read More »

Free up Disk Space on /boot

Occasionally you will need to free up some disk space on the /boot partition after updating your kernel several times.  Here are a few commands to list all installed kernels on your Ubuntu system, except the running one. kernelver=$(uname -r | sed -r 's/-[a-z]+//') dpkg -l linux-{image,headers}-"[0-9]*" | awk '/ii/{print $2}' | grep -ve $kernelver… Read More »