Yahoo's SPF policy returns "neutral" for non-matches. Gmail, Hotmail, AOL, and Outlook all return "softfail". Managed mailing lists rewrite the envelope-from, so aren't affected by the SPF policy of a user's domain. Whether the receiver uses SPF as a policy filter that can reject mail per the SPF specification or solely as part of a spam test suite where the final result is contingent on other tests is another issue.

On 5/5/2014 7:44 AM, Alwin de Bruin wrote:
I wonder why people encounter these problems only now with DMARC in place, if an SPF policy is set to strict you already see these issues.

Steve points it out already, to work around these issues with setting the headers properly (option 1). (envelope-from, from, reply-to)

When building forms and you're using a protected domain (SPF/DKIM/DMARC) which you do not have control over you are technically acting like a phisher.

Regards,

Alwin
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