Installing an Email Spam Filter

In our opinion, there are some crucial elements for installing an email spam filter of the very highest quality.

Obviously, a top spam detection capability is high on your list of requirements, followed by simplicity of use, in order to allow you to set a suitable spam threshold could be tough. There are other factors like outbound scanning and greylisting to think about, and also price.

Nevertheless, no solutions are the same, and therefore each could produce different outcomes when filtering spam. Many will undoubtedly have had a bad experience which has prompted them to explore spam filtering service providers, while others might be using a safety first strategy and implementing an anti spam filtration system as a safety measure.

From past experience, organizations have a broad range of goals when seeking a spam filtering program. Based on research conducted by the Radicati Group (2016), the typical office based employee receives ninety emails each day. Of these ninety emails, fourteen emails are spam emails which were delivered undiscovered by email filters. The study did not not reveal the number of spam emails recognized and also blocked, but at a detection speed of 99.9 % (which almost all sophisticated spam filtration system solutions are capable of) which would indicate an average of 1,400 spam emails are delivered to every office based personnel each day.

A spam detection rate over 99% decreases the typical quantity of spam email messages received every day from fourteen to four – minimizing the risks of personnel dropping for a phishing scam or perhaps exposing the system to malware by 72%. Employees would likewise spend 72% less time deleting and identifying spam emails, enhancing their productivity. Naturally, detection rates are adjustable based on the functions applied, which takes us onto our next concern – ease of usage.

To be able to best handle threats from phishing, email borne malware attacks as well as ransomware, an anti spam email filter has many features to identify every incoming spam email. These systems include spam thresholds, receiver verification tools, blacklists, whitelists Sender Policy Frameworks. Each one of these mechanisms could be used by a specific user, user group or perhaps business wide. You might, for instance, set much more lenient configurations covering your Sales Department´s emails to avoid possible leads being wrongly labeled as spam.


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Whatever user policies you want to set, they ought to be very easy to implement. Establishing the appropriate spam thresholds much too leniently can lead to even more spam getting sent to employees’ inboxes – establishing the thresholds too much should lead to business critical emails being quarantined until they are forwarded by an administrator.

Previously, companies have examined their spam filter service based on its incoming email scanning capabilities, but you will find many good reasons a company also needs to scan the outbound emails for malware as well as spam. Cybercriminals are effective at compromising company email users and using them to send out bulk spam messages from a “trusted source”. In these instances, cybercriminals could be making use of your company email account to send out malware to your clients.

Spam filter services with outbound scanning are going to identify some efforts to make use of your online business account to send spam email, as well block employees from sending messages which have inadvertently been loaded with malware. This particular safety measure is able to stop your company being blacklisted by spam detection organizations.

The ‘Greylisting’ procedure is also important. Using this process all inbound emails are sent back to the originating mail server with a request to be resent. The main reason for this is that spam servers rarely send the emails a second time. This allows spam vendors to create a list of spammers’ IP addresses.