Cron <root@mms> * * * * root : YunoHost DynDNS update; sleep $((RANDOM%60)); ! ping -q -W5 -c1 ip.yunohost.org >/dev/null 2>&1 || test -e /var/run/moulinette_yunohost.lock || yunohost dyndns update >> /dev/null

Hardware: VPS bought online ( Contabo )
YunoHost version: 11.1.0.2 (testing)
I have access to my server : Through SSH and browser
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no

hello.
another daily issue, receiving email with this title

Cron root@mms * * * * root : YunoHost DynDNS update; sleep $((RANDOM%60)); ! ping -q -W5 -c1 ip.yunohost.org >/dev/null 2>&1 || test -e /var/run/moulinette_yunohost.lock || yunohost dyndns update >> /dev/null

and this body

/bin/bash: line 1: default.private: command not found

what is is?
what should i do?

+1, I get exactly the same error. I also get a daily email with:

Blockquote
This is the mail system at host {my-domain}
I’m sorry to have to inform you that your message could not
be delivered to one or more recipients. It’s attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

admin@{my-domain} (expanded from ): user unknown

Maybe these are connected?

the anser for that is here.
i dont know if they are connected though.