How to Block NDR Spam
Source:
GFI Software
Document Type:
White Paper
Research shows that up to 90 percent of e-mail received by companies is spam. In the beginning, spam was mainly text-based, but over the past few years, spammers are increasingly using embedded images and attaching common file types, such as mp3s, to gain access to mailboxes. Learn more about the types of spam out there, focusing on NDR, or non-delivery report spam—and how you can block it.