[Mimedefang] PING -> PONG support for mimedefang socket

[David F. Skoll]

Martin Blapp wrote:

> What about this little nice patch :-) ?

> +       if ($_ =~ /^ping$/i) {
> +               print_and_flush("PONG\n");
> +               next;
> +       }

:-) Applied.

But the patch was incomplete... you forgot to update
mimedefang-protocol.7.in

(Documentation updated also.)

Regards,

David.