efa-project.org

And to follow up on myself.

I tried whitelisting IPv6 senders. But still ended up in greylist.

Somehow greylisting does not work properly when running IPv6.

the sending server is acting correctly and tries to resubmit the message but still keeps on being greylisted.

Have disabled IPv6 for now to solve it. But would like to have it on and still have grey listing working.