On Fri, Oct 24, 2003 at 10:47:01AM -0700, Justin Mason wrote:
|
| Finally, another minor nit: 3.5.1 notes:
|
| The <directive-set> could even include another LocalPart lookup. As
| with <Include> mechanisms, SPF clients are REQUIRED to support
| recursion to a depth of 6 lookups.
|
| but 3.6.* -- the "include" section -- never mentions a 6-lookup limit for
| "include".
thanks, fixed. do people think a depth-6 lookup is acceptable? should
we do more? less?
if a domain is expected to one include for example.com to point to
example.org, a max of 6 lets us cross maybe three administrative boundaries.
|
| Also, IMO, it might be helpful to specify what to do in case of "include
| loops", ie.
|
| example.com IN TXT "v=spf1 include:example.org default=unknown"
| example.org IN TXT "v=spf1 include:example.com default=unknown"
|
| Is the idea to just try it anyway until it hits 6 lookups, or should an
| SPF client "know" that it's already included 'example.com' and ignore
| that?
|
clients are expected to perform loop detection.
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