Using Anti-spam Filters on Exchange

Email spam filtering is the processing and organizing of email according to a specific criterion. A spam filtering software plays the role of sorting incoming messages in a bid of identifying and pulling out spam or junk mail. Exchange spam filters are commonly installed on internet mail servers, on private network servers or on personal computers. Spam filters have the capacity to recognize spam and preventing its delivery. Exchange spam filters and spam email play diametrically opposed roles whereby spam is effectual if it is capable of evading filters whereas exchange spam filters are effectual if they are capable of recognizing spam.

Spam email is generally a mass of unethical emails that lacks valid header information while equally performing involuntary tracking once it is opened thereby spreading spyware and viruses. The main purpose of this sort of unsolicited e-mail is advertising services or products to prospective customers who have no relations to the company. In certain cases, spam email is actually malicious and its intention is not to advertise products or services. In such cases, a way of making e-mail seemingly appear like spam is devised by senders with the expectations of recipients visiting a website, thereby permitting the downloading of viruses onto their respective computers.

Other than spreading malicious Trojans and viruses, spam perpetuates phishing scams and these are the reasons that make spam filters an appropriate means of protecting the computer and network as well as cutting junk mail out. Exchange spam filters work by making comparisons between parameters involving incoming mail as well as lists entailing configurable rules. The settings of a spam filter may for instance be geared towards checking an incoming mails subject heading for terms related to pharmaceuticals, pornography and other common spam products.

Spam is usually inclusive of personable or innocuous subject headings that make it more complicated for general ISP spam filters to tell the difference between legitimate email and spam. Some spam therefore still passes from the internet mail servers onto the end-users and the private networks that are connected. This is the reason for the installation of spam filters by a majority of company network administrators as is the case with end-users working from home. Spam filter in such cases is highly configured in a bid of catching junk mail especially that which passes through the spam filters located online.

Exchange spam filter has a similarity to software in that not all of them are equal. There is presently a spam filter that is considered intelligent and based on statistical methodology. This program makes a comparison between all incoming emails and the set of rules which are user-defined before identifying spam on the basis of mathematical probabilities. In the easiest configuration, junk mail is passed onto a spam folder by an exchange spam filter while legitimate mail is passed into the inbox. The assignments are reviewed by the user and the mistakes corrected. Since the exchange spam filter program has the capacity of remembering corrections, it ensures that such mistakes are not repeated in the future.

Tags: Adware & Spyware Security, anti-spam, Computers, email, exchange, exchange server, filtering spam, mail server, malware, messaging, software, spam filter, technology

This entry was posted on September 26, 2009 at September 26, 2009 and is filed under Adware & Spyware Security. You can follow any responses to this entry through the RSS 2.0 feed.