Re: ABNF, and miscellany

On Sat May 14 2005 03:11, Frank Ellermann wrote:

> Bruce Lilly wrote:

> > No, it and many others will do nothing to curtail spam, but
> > will adversely affect legitimate mobile users.
> 
> I disagree.
[...]
> You can use Webmail.

No, the issue is sending mail, not looking at web pages of mangled
messages.

> You can use the MSA of your provider.

Which provider? The one that I use for *receiving* mail?  Who says
that that provider has an MSA (as opposed to an MTA), or that it
is accessible (port 25 blocking)?
 
> You can even use the airport-smart-host if that beast accepts
> error messages for what you sent (maybe forwarding it later to
> you).

Huh?

> If that's not good enough for you I recommend that you 
> don't publish a "sender policy".

Associated with which domain -- the one that an MUA puts in HELO/EHLO --
which comes for the mailbox for *receiving* mail, and which may be
under control of some third party?