This happened to all of us, once we have our own email box configured everything looks just fine, but the time goes by and little to little we start getting spam, garbage, and some very dangerous emails from unknown senders and fishing content or malware in the attachments.

It was worse a few years ago but the industry has been fighting this and nowadays there lot of vendors and thousands of implementation of email security appliances everywhere, at all levels.

These appliances get database updates, new string sets, and new regular expressions that look for patterns and check the headers of the email for familiar matches and mark them as spam.

Email security starts from your domain records. Configuring the mail services is a little more complicated than just creating your first email account. You must secure it with the best practices and configure the next values:

• DKIM (Domain Keys Identified Mail): is an email authentication technique that allows the receiver to check that an email was indeed sent and authorized by the owner of that domain.
• SPF (Sender Policy Framework): is an email authentication method designed to detect forging sender addresses during the delivery of the email.

One is used for senders and the other is used by receivers, and because emails send and receive then you must configure both of the.

You could use a Spam Filter engine, like SpamAssassin for your email accounts, this will help you to identify unsolicited bulk emails (spam), and send them to a separate folder (Spam Box) or automatically delete them (Auto-Delete) from your email account. 

SpamAssassin uses a variety of security mechanisms including header and text analysis, Bayesian filtering, DNS blocklists, and collaborative filtering databases. SpamAssassin runs on a server, and filters spam before it reaches your mailbox. The configuration can be tuned but it requires some effort from you.

Another very easy solution that you can deploy is called SpamExpert. This is the easiest way to keep clean your inbox from spam and more.

This security feature is very easy to configure and it will start working immediately, you will notice the difference. It will detect 99% of the unwanted emails and it will scan your emails for malware. This is a two-in-one feature, and for the price, it is worth it.

With SpamExpert your emails will be received in the correct inbox folder of your recipients, and your inbox will stay clean from unwanted emails. This technology is maintained and tuned all the time, no need for your intervention.

You will benefit from a rich array of features, via a user-friendly interface with multilevel control, live quarantine, and regular new releases. The solution offers multilevel control and additional email continuity via storing emails and retrying delivery during outages or downtime. This is a serious feature, at the same level as the major leagues in emails but for a very affordable price here.