Is there a way to update multiple domains (3) with ddclient ?
and haw is this done ? by separating the domains with comma's (,) or by repeating the configuration multiple times.

oomsmeurrens.xyz is successfully updating, but once I add oomsmeurrens.eu and oomsmeurrens.be it gives me BADAUTH again.

not sure if this is possible with one ddclient

rgds
Gert

You can put the domain names in one configuration file, one on each line. It would look like this:

# ddclient configuration for Dynu
#
# /etc/ddclient.conf
daemon=60        # Check every 60 seconds.
syslog=yes        # Log update msgs to syslog.
mail=root        # Mail all msgs to root.
mail-failure=root        # Mail failed update msgs to root.
pid=/var/run/ddclient.pid        # Record PID in file.
use=web, web=checkip.dynu.com/, web-skip='IP Address'        # Get ip from server.
server=api.dynu.com        # IP update server.
protocol=dyndns2
login=myusername        # Your username.
password=YOURPASSWORD        # Password or MD5
MYDOMAIN1.COM        # List one or more hostnames one on each line.
MYDOMAIN2.COM
MYDOMAIN3.COM