Spam Prevention and Email Security Services
Email Mediator provides various low-cost and easy-to-implement services to prevent spam. Mail that is accepted by our system will be relayed on to your official mail servers.
Delayed Unknown Sender
The "Delayed Unknown Sender" service only accepts mail from known senders. Unknown senders are rejected with a temporary failure until dynamically added to the accepted database. Various research shows this technique can stop between 85% and 99% of attempted spams. (Our mail exchangers block around 94.5% of spam senders using this technology.) Our servers share the dynamic database entries.
Standard Spam Prevention
A high percentage of spammers use compromised Windows computers and one-time sending systems. In most cases, spammers don't have the time or resources to rely on valid SMTP and working DNS for quickly broadcasting their illegal and unsolicited email. This "Standard Spam Prevention" service uses simple and proven tests for rejecting spam by requiring standards-based email communication and verifying the SMTP communication, sending mail server, and DNS are sane by following approved and defined standards. Individually, these different techniques block between 6.9% and 40% of sending hosts (the spammers).
Temporary Email Queuing
If your official mail servers are temporarily down (even for a few days), our servers will hold the messages in our queues and periodically attempt to relay them to your servers.
If you need emergency email service, long-term email queuing or email hosting, please let us know.
Spammer Tarpits
We also provide SMTP tarpits that waste spammer's resources. Not only do we prevent spam — but we also help prevent spam for others too. As senders can not easily distinguish between our valid SMTP servers and the tarpits, spammers learn not to target their email to the emailmediator.com mail exchangers. We have a huge collection of spamtrap email addresses (for different domains), such as anthony65@emailmediator.com, which spammers target and will be punished for using.
Our servers also temporarily tarpit bogus mail senders that purposely skip our high priority MX systems and connect to our lowest priority DNS MX records first. Valid SMTP servers do the right thing and attempt to contact highest priority DNS MX records first. A significant number of botnets, zombies, and spam engines attempt to bypass spam protection by skipping the higher priority mail exchangers (to target poorly configured mail servers). Our research shows this blocks approximately 59% of unknown senders.
Our distributed spam traps database is about 50% of the size of our distributed "Delayed Unknown Sender" database. And it is about 6% to 12% of the size of our dynamically-generated whitelist. (Click here for recent stats.)