Am 2018-09-02 02:27, schrieb Hendrik Boom:
> If I'm away from home and post using my mobile, I still often want the
> reply to go to my home site, which is *not* in the cloud.

But then, I assume, it is not a freemail address.

Nowadays lots of spam is sent through freemailers using a disposable
email address and a reply-to to a different freemail address. Since you
cannot block the whole google and yahoo mail servers, the only way to
reject such spam is by the reply-to header.

Jochen.