SPF and MailScanner

[Tony Finch]

"Spicer, Kevin" <Kevin.Spicer at BMRB.CO.UK> wrote:
>
>There is a page addressing common objections to SPF on their site http://spf.pobox.com/objections.html

I note that their Sender Rewriting Scheme as proposed would turn most
mail servers into open relays, in the same way as the % hack does.
You need to make the rewritten return path cryptographically unforgeable.
The requirement for this in the SRS I-D is laughably weak.

http://spf.pobox.com/srs.html

Tony.
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