On 2010-02-22 at 10:52 -0800, John Nagle wrote: > I'd like to know when, if ever, Exim's SPF checking will advance > from "experimental" to "supported". It's been "experimental" > for years. See "http://wiki.exim.org/SPF";
The RFC providing the SPF specification is experimental, so any implementation is experimental and, perforce, susceptible to change. Given that DKIM does everything SPF does, without some of the ancilliary problems, and is on the IETF Standards Track, I suspect that the will to make SPF anything more than "this exists, you can use it if you want but if it breaks you get to keep both pieces" is unlikely to be found. Look towards DKIM and ADSP; DKIM itself will let you start establishing per-domain reputations and ADSP solves the same problem that SPF does but with reduced risk of breaking forwarding -- of the (consensual definition for) legitimate email systems, only mailing-list managers which tamper with headers or content but don't re-sign will have problems; it's a much smaller problem and easier to fix as part of routine MLM updates. -Phil -- ## List details at http://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##
