On October 19, 2004 at 17:14, [EMAIL PROTECTED] wrote: > AOL is not (yet) blocking based on SPF alone, although it is one of the > criteria they use. I spoke to someone at the office of the postmaster at > AOL. The domain whitelisting is much more important in getting mail through > to AOL than SPF is at this moment, although that will change. As was said, > though, SPF is easy enough to implement espescially if you control your own > dns so you might as well get it done.
AOL has been whitelisting domains for awhile, and it even does special arrangments with bulk commercial mailers to created a specific set of dedicated SMTP connections that they send mail through. SPF has momentum because it has backing of major (ISP) players in the industry. It is debatable on how effective it will be in dealing with the spam problem (see the IETF ASRG mailing list for some discussion on it). Completely blocking of email from domains that do not have SPF records cannot be done yet until wide-spread adoption is obtained. Email is still the "killer app" of the Net, so ISPs are concerned about blocking too much mail that may upset its users. Yahoo's Domain Keys is an alternative-complementary proposal, but has some major technical problems with the initial draft they proposed. However, such problems are solvable. I think if DK is cleaned-up, it can be very useful and allows for trusted-third-party models. Sometime in the near future, you will probably see stamped email. I have some direct personal knowledge of one effort in the development of a stamped email system (since I wrote the main technical document for it). IMO, I think stamped email (with the proper business model) has a market among ISPs and big bulk commercial emailers, but stamped email has scalability problems to individual people (i.e. P2P), with such problems not just be technical, but socio-economical. I am no longer involved with the development of the system, so I do not know what the final product will look like or how well it will work. The stamping and verification process is fairly straight-forward to implement (taking extreme care with the security aspects), so the real determining factors are the purchasing and financial models that are used and the costs associated with supporting such models. > AOL's 'postmaster' support people are surprisingly helpful and cooperative, > and actually follow up to make sure things work. Maybe that shouldn't be > surprising, but it wasn't my expectation prior to calling them. That is new. In the past, especially with the past issue of AOL users having problems with MIME messages, AOL support sucked, with the Net community bearing the brunt of AOL users seeking help (including me receiving personal email from AOL users asking for help about MIME). --ewh
