Re: [Asrg] Unintended consequence of SPF

> There are plenty of systems that do SPF checks against the From: header.
> MSN/Hotmail, for example, will file a message in the junk folder if the
> RFC822 From header gets an SPF fail (fortunately the Sender: header is
> checked preferentially).
That's called Sender-ID.  People in the SPF community assure me that
the difference is very, VERY, VERY important.

R's,
John

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