mail servers (MX) having an IPv6 address can not be reached over IPv6

Hi Guys,

Many thanks for helping. I am aware that there is no rDNS yet, I asked my IP provider already, but now already waiting for a week...

Alex, your solution helped me, in these files I found and changed it to =false
/etc/exim.variables.conf:disable_ipv6=true
/etc/exim.variables.conf.custom:disable_ipv6=true

Now it works, everyone many thanks for helping me out. I appreciate this!

Have a nice day.
Kind regards, Fred