spf-discuss
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Some thoughts about spam and SPF

2004-08-25 05:28:00
Shelby wrote:

As long as they do not use "exists" to specify specific users.

Using "exists" to specify users will tell a spammer which addresses to
spam and forge (because not every recipient will be SPF protected for
years).

The SPF record of pamho.net uses "exists":
v=spf1 exp=exp.pamho.net ip4:81.221.18.144/29 exists:%{l}.ses.pamho.org -all

Now tell me what addresses the spammer can forge.

Roger