spf-discuss
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Re: SPF design refrozen

2004-01-25 05:13:07
--Phil Howard <phil-spf-discuss(_at_)ipal(_dot_)net> wrote:

How about "v=spf1+" meaning "experimental additions" to version 1, and
that such a record can co-exist with "v=spf1" so you can publish a normal
specification at the same time?

@ IN TXT "v=spf1 ip4:10.0.0.0/8 -all"
@ IN TXT "v=spf1+ foo:bar ip4:10.0.0.0/8 ?all"


That's probably fine. Does the spec currently require v=spf1 to be followed by a space? If the only requirement is v=spf1{anything} then v=spf1+ might get accidentally picked up by some parsers. But if that is the case then the same problem exists with v=spf10.

The spec wasn't clear on what would happen in future versions. The second version will probably say something like "Look for TXT records starting with v=spf2 - if none present, look for v=spf1 and continue with that, in compatibility mode. Administrators should publish both v=spf2 and v=spf1 records for [some recommended length of time]"

--
Greg Connor <gconnor(_at_)nekodojo(_dot_)org>

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