News Trends Tutorials Stats Hardware Reviews OS Roundup Hot Topics Forum Product Watch Glossary Web FTP Mail Application Proxy Real-Time Comm Collaboration Operating Systems Sitemap Contact Us Home Become a Marketplace Partner IT Developer Internet News Small Business Personal Technology Search internet.com Advertise Corporate Info Newsletters Tech Jobs E-mail Offers Be a Commerce Partner

Enter a keyword...   ...or choose a category. choose one... Communications Computer Industry Companies Computer Science Data Graphics Hardware Internet and Online Services Mobile Computing Multimedia Networks Operating Systems Programming Software Standards Types of Computers World Wide Web   open relay Last modified: Tuesday, December 02, 2003  Also referred to as an open relay server, an SMTP e-mail server that allows a third party to relay e-mail messages, i.e., sending and/or receiving e-mail that is not for or from a local user. Open relays make it possible for mobile users to connect to corporate networks by going first through a local ISP, which then forwards the message to their home ISP, which then forwards the message to the final destination. However, a downside of open relay technology is the proliferation of its usage by spammers looking to obscure or even hide the source of the large-volume e-mails they send. Open relay also is called spam relay, third-party relay or insecure relay. Contrast with mail relay.   Open Relay Database A non-profit organization which stores IP addresses of verified open SMTP relays. What is Third-Party Mail Relay? This document is an introduction to the third-party mail relay problem. Related Categories Business Computing Electronic Mail Internet and Online Services Servers Related Terms e-mail e-mail address e-mail aliasing ISP server spam Shopping open relay Products Compare Products,Prices and Stores Shop by Category: Security Systems and Surveillance 72 Store Offers Network Accessories 5 Model Matches