Anti-Spam Techniques

Using Blacklists
Blacklists are also known as blocklists. Organizations such as SpamCop and MAPS maintains a blacklist database which bans a certain entity from sending emails. The blacklisting can be by IP address, person, company or domain...

Using Whitelists
Whitelists are exact opposites of blacklists. Whitelists can be used by communities where members must be pre-approved in order to send and receive emails. Its based on the nightclub concept "If your name ain't on the list, you ain't getting in"...

Blacklists - Are You The Victim Or The Criminal?
If your IP address or domain is present on a blacklist, then you're wasting your time sending emails. Many spam blockers are integrated with blacklist databases which also means that your email will never be delivered...

Using Whitelists To Fight Spam
The benefits of whitelists are many but proper management of the whitelists is equally important. Mismanagement of whitelists will only lead to more headaches for everyone involved with missing email...

After Spam Is Sent

Spam Database
This method involves feedback from the user community to report spam when they receive it. When enough users report a message as spam, it trips a red flag which marks the message as spam. Spam blockers use this information to block the offending message from further users.

Spam Firewall
Spam firewalls are installed by companies to identify and prevent spam from entering their networks. These are highly effective when implemented on networks of 100 to 20,000 employees as they help to minimize workload from the server...

Challenge Response Spam Filtering
When using a challenge response system, each email address must be authorized to deliver email to you. You can either authorize these email addresses manually or have the challenge response email server take care of that for you...

Spam In Your Mailbox

Using A Spam Filter
If spam has already reached your mailbox, then your last line of defence is an effective Spam Filter software. Unfortunately not all Spam Filter software are equal or works with every email service...

Heuristic Filtering
Heuristic simply means speculative. It works by examining messages for certain high risk patterns which might be flagged as spam. Modern heuristic engines allows user overrides and has to update its filtering rules regularly as spam evolves...

Bayesian Filtering
Bayesian filtering is a recent development employed by spam blocker softwares and it appears to be very effective for detecting and removing spam at the personal level...

Others

The Can Spam Legislation
The CAN SPAM Act was a government initiative passed by Senate on November 23 2003 and stands for Controlling the Assault of Non-Solicited Pornography And Marketing. The bill took effect on January 1st 2004, but has there been a reduction in spam today?

Ciphersend - A Secure Email Solution
Ciphersend is a high powered secure email service which uses 2048 bit encryption. It has to be installed on your PC and connects to a Ciphersend server in order to send and receive emails...