Configure SPF and DMARC for Office 365 and IIS SMTP.

So, what is all the fuss with DMARC when we already have SPF in place? Aren’t we already validating the sending SMTP domain? The answer is; yes and no. The SMTP domain is only being partially validated. This is meant to be a “how to” tutorial and by no means a detailed explanation on how … Continue reading Configure SPF and DMARC for Office 365 and IIS SMTP.