> On Nov 6, 2019, at 11:45 PM, Benny Pedersen <[hidden email]> wrote:
> can other confirm it ?
> _ is not an ip
This could well happen, since RBL DNS servers are custom software
that does not necessarily handle empty-non-terminals.
There are more reasons to avoid qname-minimization on MTAs, I don't
remember the other issues just at the moment, but basically, while
it may be appropriate for browsers and laptops, it is presently a
poor fit for MTAs. Don't enable this on your MTA's resolver.