Microsoft cracks down on bulk email with strict new Outlook rules

I’ve got some bad news for you, email administrators -- your Monday may be getting a lot worse. You see, starting today, Microsoft has officially begun rejecting high-volume emails that don’t meet its new authentication rules. Here’s the deal. If you send more than 5,000 messages per day to Outlook.com addresses (including hotmail.com and live.com) and you’re not properly set up with SPF, DKIM, and DMARC, your emails may never arrive. Yikes. As you can see, Microsoft is strictly enforcing these bulk email rules, with no leeway. Until now, questionable messages might have ended up in junk or spam folders.… [Continue Reading]