spf-discuss
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Re: [spf-discuss] Useful SPF results

2006-12-04 05:15:51
On Mon, Dec 04, 2006 at 07:04:20AM -0500, Scott Kitterman wrote:

What is useful is the -all at the end which some people would be unable to 
publish without the option for ?mechanism.

I more obvious example of this is when your ISP doesn't publish an SPF record 
and you have to guess the IP blocks they send mail out of.  You don't really 
want to authorize random IP addresses, but without guessing, there's no way 
to publish an SPF record.

If you have to guess this, it would be a reason NOT to publish -all.
After all, you guessed, so you can be wrong and have not included all
IP blocks of said ISP.

Alex

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