Mail Transfer Agent

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Mail Transfer Agent

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Engate solves this problem by differentiating between legitimate and non legitimate mail transfer agents (MTAs).
Internet email is based on SMTP, which describes the interaction between Mail Transfer Agents (MTAs), which are responsible for carrying messages to and from hosts on the networks, and Mail User Agents (MUAs), which are simply the email clients, such as Eudora or Outlook, that people use to compose and send email.
Commtouch([R]) (Nasdaq:CTCH) today announced the availability of its new Milter plug-in, a cross-platform, multi-service Sendmail plug-in designed to enable straightforward integration of Commtouch messaging security filters with Sendmail and Postfix mail transfer agents (MTAs).
According to Scott Lukes, eSoft's Vice President of Marketing and Product Management, "Traditional Firewall/UTM devices tend to be packet-based, which means they do not have the capability to incorporate mail transfer agents, or MTAs, into their devices, nor can they fully proxy for mail protocols like SMTP/POP3 or web protocols such as HTTP/HTTPS.
CertifiedEmail has been implemented by leading ISPs, all leading email marketing service providers (ESPs), and a vast network of OEMs including providers of Mail Transfer Agents (MTAs), edge devices, User Interface (UI) suites, anti-spam and anti-phishing filters, and other email security related products.
The ESPC's Sender ID Summit includes over 50 Email Service Provider Coalition members who provide mail delivery services to an estimated 250,000 clients, in addition to leading companies and organizations, such as mail transfer agents (MTA), reputation and seal providers, and anti-spam vendors.
Engine portability also enables the product to function with nine different operating systems, ten mail transfer agents and on four hardware platforms.
Formed in November 2002 to fight spam while protecting the delivery of legitimate email, the ESPC boasts a membership comprising many of the brightest and most innovative minds in the email industry, including Email Service Providers, Mail Transfer Agents, Internet Service Providers, application and solution developers, and deliverability solutions providers.
Most enterprises, service providers and independent software vendors (ISVs) develop custom software for dynamic content, message tracking and infrastructure administration and rely on freeware-based Mail Transfer Agents (MTA) for message delivery.
The Linux and GNU software system provides two classes of mail servers: back-end mail transfer agents and front-end user interfaces.
Sendmail Multi Switch coordinates the activities of the variety of sendmail Mail Transfer Agents (MTAs) that reside at separate locations and play different roles within an enterprise, such as extranet interfaces, policy implementation, departmental mail integration and message hosting.