Never mind – or ? and think of what happens to those poor domains that are saddled with a +all SPF record.
From: mailop <[email protected]> on behalf of Neil Jenkins via mailop <[email protected]> Date: Friday, 26 May 2023 at 9:16 AM To: Mailop Group <[email protected]> Subject: Re: [mailop] Microsoft Office365 not rejecting emails when instructed so by SPF recored? On Fri, 26 May 2023, at 11:10, Scott Mutter via mailop wrote: So basically SPF is worthless. It's not worthless at all. It's a valuable signal to assign reputation as part of an overall filtering solution, and useful as part of DMARC. It's just the -all/?all etc. bit on the end that proved worthless. Cheers, Neil.
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