Did you recently see a significant increase in the number of spam complaints reported back to you via the Yahoo CFL (Complaint Feedback Loop), their version of an ISP feedback loop? If so, you&#…
Read more
If you've previously seen this bounce message: 5.7.606 Access denied, banned sending IP [1.2.3.4]. To request removal from this list please visit https://sender.office.com/…
If you've upgraded your iPhones to the just-released iOS version 11 and your email is hosted by Microsoft's Outlook.com, Office 365 or Exchange 2016, you may now find you…
Over on the Mailop list, a postmaster shared his tale of woe involving sending mail to a small set of recipients whose mail server is behind a Cisco PIX firewall. You can tell i…
