On Mon, Feb 09, 2009 at 02:36:25PM +0000, João Miguel Neves wrote: > That would mean that the most useful use of SAV is negated. Or is there > some prior arrangement that would allow me to do that to hotmail.com, > gmail.com, yahoo.com*?
Some Mailproviders explicitly forbid the use of SAV against their Mailsystems. Some others provide false information depending on the SPAM-Filtersettings of their users, others are just plain broken. And the Information that <some.fake.acco...@hotmail.com> is deliverable has virtually no meaning regarding the SPAM-likelyhood of the incoming e-Mail. SAV does not verify the authenticity of the sender address. SAV is a nice idea if run against a limited set of trusted domains (who's postmasters expclitly allow you to perform these Lookups), but it's not such a good idea in general. If everyone would use SAV, the ammount of SMTP traffic in the Internet would *double*. I bet most heavy duty mailssystems don't scale double. > I'm going to reduce the target domains, but is there a known agreement > with MS, Google or Yahoo to use SAV against their servers? Ask their Postmasters/Admins. If they say it's ok, do it.
