Category: FreeBSD

These are my notes, tips and howtos about installing and maintaining FreeBSD and third party applications for FreeBSD. If you have feedback, feel free to contact me.

FreeBSD, System Administration

X and GNOME for FreeBSD

Xrandr.

If you just attached a monitor to your computer, such an external monitor or TV via HDMI, you can activate it in GNOME with Xrandr. Just run the utility. If you want to configure it in GNOME, then go to GNOME settings and Display.

% xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 276mm x 155mm
   1920x1080     60.05*+  60.01    59.97    59.96    59.93  
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 connected (normal left inverted right x axis y axis)
   3840x2160     30.00 +  25.00    24.00    29.97    23.98

GNOME Tweaks.

Go to Appearance and change Applications from Adwaita to Adwaita-dark. This will make non-GTK applications, such as third party applications, dark mode as well as the GNOME applications.

% gnome-tweaks
FreeBSD, System Administration

How to configure SPF policy record in BIND DNS

What is SPF?

SPF is short for Sender Policy Framework and is an internet standard, that ensures, that email is in fact sent from authorized mail servers. SPF is also known as an SPF policy or an SPF record. SPF is a special TXT resource record (RR) for the domain in DNS. The TXT RR contains a list of mail servers, that is authorized to send email on behalf on the domain. You can configure an SPF policy record in BIND DNS.

Continue reading “How to configure SPF policy record in BIND DNS” →
FreeBSD, System Administration

How to install OpenDKIM for Sendmail on FreeBSD

What is DKIM?

DKIM is short for Domain Keys Identified Mail and is an internet standard, that ensures, that an email is in fact authorized by the owner of the domain, and, that its content is authentic and has not been modified. DKIM is available for FreeBSD as the OpenDKIM package or port. OpenDKIM is a milter for Sendmail, which is the default mail server in FreeBSD.

Continue reading “How to install OpenDKIM for Sendmail on FreeBSD” →