If you're seeing SPF alignment failures when using an email service provider platform, don’t worry! This is such a common point of confusion among senders (and it even came up on a Valimail webinar I hosted last week with Ed Fisher from Microsoft) that I decided to devote last week's video to this very topic.
TL;DR? Alignment means that the domain in an authentication header (SPF or DKIM) matches the visible “From” domain, and DMARC only requires one of them to align. Many ESPs use their own return-path domain, causing SPF alignment to fail, but as long as DKIM is properly set up with your domain, your emails will still pass DMARC. If your ESP doesn’t support DKIM signing for your domain, look closer. Most do (and all really should).
I cover all this, and more, including visuals on how to better understand alignment in email authentication, in the video. Find it embedded above or here on Youtube.
