spf-discuss
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Re: [spf-discuss] The spammers are using +all

2007-09-06 09:51:45
Not only are the spammers using +all, but the more clever ones are using several ip4 mechanisms with very broad CIDR specifications so that when you put them all together, they end up being ip4:0.0.0.0/0.

While one can detect a Pass being returned by +all easily, doing so with an aggregate of ip4's is far more difficult.

--Marc

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