Benefits of Sendio First Defense Service
In 2009, invalid email messages accounted for more than 95% of total email volume received by the average organization. These unwanted emails rapidly consume bandwidth, processing power and pose a security threat to a company’s users and network. Sendio® First Defense service was specifically designed to mitigate these problems by dramatically decreasing workload, while boosting overall system performance.

Decreased Workload: Sendio does the heavy lifting for your email server and anti-spam system, sending only those messages that pass a rigorous set of security checks onto your network.  

Increased Effectiveness: Sendio enhances the power of your current anti-spam system while keeping  your organization’s email server focused on its mission-critical role of managing inbound and outbound email.

Hybrid Advantage: Sendio allows you to keep key message processing on-site, while taking advantage of the security and distance of a cloud-based environment for early threat detection.

How it Works
Sendio First Defense Service reinforces the anti-spam solution you already have in place, completing four email validation and verification checks before each message reaches your current system - and eliminating 97% of invalid email in the process.

Domian & Directory Check: Is the sender listed in standard DNS? Are the recipients recognized by your LDAP server? If not, the message does not need to be passed on to your mail server. 

Sender System Test: Is the sending server a standard SMTP system or an optimized spammer tool? Sendio SilverListing Technology ensures the sending source is legitimate. 

Anti-Virus Scan: Already have anti-virus scanning in your infrastructure? Another layer (using an alternate sinature database) provides a "defense in depth" against worms, trojans, and attacks. 

Anti-Spoofing Verification: Ensures that email messages sent via the internet from your own domain (and addressed to you) are blocked - diminishing spoofing instances and associated risk. 

Sendio First Defense Service Workflow