Documents » postfix spam.
Abstract: Spam is unsolicited junk mail sent to you or your mail server. People who indulge in such activities are called spammers. These are sent by commercial advertisers who may offer dubious products, get rich schemes, products that do not suit your life style, promote illegal activities, etc. The intent here is to make you spend money. Almost 60% to 70% of
spam is related to porn. There is another type of spammer who sends large number of e-mails that flood your mailbox or mail server. This white paper provides information about
spam, losses caused by
spam, how
spam works and suggests key features that a good anti-
spam software should have.
PubDate: 9/6/2005 1:21:00 PM
Abstract: Spam considerably lowers user productivity, as it delivers unwanted, irrelevant, or anonymous e-mail messages. The best way to manage the incidence of spam is to measure it. The Spam Index—a tool for measuring improvement in spam control systems and for comparing spam control performance with competitors—is a method used by businesses worldwide to achieve lower spam levels and improve business performance.
Abstract: Research shows that between 65 and 95 percent of all e-mail is considered spam. On an individual level, spam is an annoyance more than anything else, but on a company-wide basis, spam causes significant problems—and the cost to manage it is sizeable. Spammers are always one step ahead of antispam vendors, so to combat this persistent problem, companies need a single-source product that can eliminate spam for good.
Abstract: Along with positive technological changes inevitably come the negative (spam 2.0, anyone?). Today's e-mail spam is increasingly image-based and harder to detect. Fingerprinting and optical character recognition (OCR) help identify some spam, but are less and less effective. Find out how a solution that creates real-time, behavior-based rules for new spam campaigns can put spam in its proper place—outside your system.
Abstract: 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.
Abstract: Spam has become a global epidemic. And because it is constantly evolving and mutating, spam makes it difficult to separate good e-mails from the bad. While most mail servers have mechanisms to combat spam, they often require third party solutions to eradicate spam from the network. Find out more about the shortcomings of established filtering methods, and how one community-based approach to filtering can work.
Abstract: So you think you just need to be able to block spam? Think again. When it comes to anti-spam, detection is important. But so is management. You also need to control incoming and outgoing e-mail content, as well as checking for spam, viruses, specific text, and attachments within a rule-based framework. Find out how to use an integrated e-mail content management package for effective and flexible spam control.
Abstract: The options available for mitigating e-mail spam in the enterprise are varied—as varied as the variety of actual spam definitions. These factors often lead to some confusion about what a particular anti-spam solution can or can’t do. In order to focus on the basics, you need to cut through the hype in the anti-spam market and its buzzwords.
Abstract: Online spam campaigns have become more sophisticated and precisely targeted. Spammers routinely disseminate millions of fraudulent e-mail messages to control legions of employee computers and connect them into botnets which sap bandwidth and productivity. Learn how implementing a hosted anti-spam service in your company can provide multi-layered protection against spam, improve employee productivity, and lower costs.
Abstract: Earlier-generation spam systems all share a common weakness—they rely heavily on analyzing content that can easily be manipulated by spammers. As such, state-of-the-art antispam systems must go beyond content examination by analyzing messages in the full context in which they are sent. Find out how using a multilayer defense approach can help you successfully eliminate spam and blended threats in your enterprise.
Abstract: An Internet service provider (ISP) presents one of the most complex environments for managing spam, due to the sheer volume of e-mail, and the high service levels demanded by customers. The main challenge for ISPs seeking anti-spam solutions is thus to find products that provide the flexibility to suit a wide variety of users, and the preferences of those users.
Abstract: E-mail is a powerful business tool that most enterprises can’t live without. Unfortunately, along with its capability of accelerating commerce, productivity, and social interactions, there are some drawbacks—such as spam! Companies that rely on e-mail to do business simply can’t afford the negative affects of spam. However, new technology is emerging that helps stop spam and allows users to get on with business.
Abstract: From a user perspective there is no user-friendly SPAM blocking solution.
Abstract: Whether you’re a heavy e-mail marketer, or thinking about using e-mail to market to prospects and customers, there are plenty of challenges to work through, including anti-spam compliance, single- and double-opt-in methods, text vs. HTML formats, white-listing, black-listing … In order to increase your success as an e-mail marketer and not get tagged as a “spammer,” learn about the ten rounds you’ll need to fight through.
Abstract: Just when malware design seemed to have reached a plateau, new and more complex attack techniques have now emerged. For a while, security controls designed to manage spam, viruses, and malware were working, but as a result of this success, the threats they protected against were forced to change. Learn about today’s key security trends and how you can fight against the sophisticated new generation of Internet threats.
Abstract: Images have long been part of e-mail communications—from corporate logos in signatures, to scanned documents, and more. But recently, spammers have started using a variety of techniques to embed unsolicited messages into images in order to bypass increasingly sophisticated spam filters used by companies and Internet service providers. The question is, what are you going to do about it?
Abstract: @Home has been scanning their own customers to see if they are running news or webservers. If you're one of their spam happy customers, cut it out. If you've been a past victim of spam coming through their networks, hopefully some good will come out of this.
Abstract: E-mail users around the world have noticed an increasing number of unsolicited messages reaching their mailboxes. Anti-spam solutions have had to increase the frequency of their updates, and also to develop more heuristics more rapidly. That’s why it’s vital to implement an automatic process that quickly learns the characteristics of new spam—without affecting existing detection accuracy.
Abstract: The PolicyPlus product contains not only anti-Spam and anti-virus engines, but also provides content filtering.