On Fri, Dec 03, 2004 at 05:52:06PM -0500, Stuart D. Gathman wrote:
| The point is to cause infinite recursion, and thereby cause mail to be
| rejected (provided client rejects on resource limit exceptions).
| Most implementations will give SPF pass for legit mail. The infinite
| recursion will only show up when the mail is from a spammer. A very
| unfriendly to receiver policy.
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.