Hi, could you please remove yunohost-erik.nohost.me?
And I still get this email, but now every 10 minutes: 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
I think it has something to do with it, but I’m not sure and I didn’t see a reply on how to solve it on related threads.
Text of mail 1 (where subject is the title of the post above):
“Domain ‘yunohost-erik.nohost.me’ unknown”
And then there is a mail 2 showing mail undelivered:
" Undelivered Mail Returned to Sender".
Help much appreciated 
Kind regards from the Netherlands, Erik