On Sat, 4 Dec 2004, Stuart D. Gathman wrote:
i'm not sure what the practical problem is with infinite
recursion. loop detection is trivial and all spf
implementations i know of implement it.
The problem is it makes you do 20 (or whatever your limit is) DNS lookups
instead of 1 or 2. I.e., it wastes the receivers resources.
The waste can be significant if the domain is commonly spammed.
Duh - Meng meant that good implementations would not hit the recursion
limit because they have loop detection, and would stop after the 2nd level.
--
Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
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