today
sending an email from C to A no longer works
sending from C to B works /etc/resolv.dnsmasq.conf is unchanged with 10.10.10.1 in the first line nslookup B shows 10.10.10.20is okay nslookup A shows public IP-Ais wrong nslookup A 10.10.10.1 shows 10.10.10.10is okay
After a restart everything works as expected
It’s a nightmare, i don’t know what’s going on with the name resolution on the yunohost system