Re: ABNF, and miscellany

On Sat May 14 2005 11:28, Frank Ellermann wrote:
> 
> Bruce Lilly wrote:
> 
> > the issue is sending mail
> 
> Yes, that's possible with Webmail.

Not if it's not available.

> >> You can use the MSA of your provider.
> > Which provider?
> 
> Your mail provider, the one you send and receive mails with.

No MSA (unless they privately consider their server on port 25
to be an MSA rather than MTA -- it's impossible to tell).

> > or that it is accessible (port 25 blocking)?
> 
> Blocking port 25 is utter dubious, find a better ISP with an
> abuse desk, not spamcast.

You have again missed the point; when in an airport lounge, one
cannot "find a better ISP".

> For an MSA you'd use port 587.  See 
> chapter 4 in draft-hutzler-spamops-04:
> 
> | Best practices are:
> | o  MSAs MUST support the SUBMISSION port, for MUAs accessing
> |    from outside the MSA's local environment.

That conflicts with RFC 2476, drafts have no standing, and nobody
is going to enforce such nonsense.

> >> don't publish a "sender policy".
> > Associated with which domain
> 
> All your domains, don't publish a "sender policy" if you don't
> know what it means.  Now that's obvious, isn't it ?

"My" domains have very little to do with sending mail, as viewed
anywhere on the Internet.  Domains which appear in a reverse path
are not "mine"; ditto for ones put in HELO/EHLO by typical MUAs.