GFI server-based anti-spam freeware. (Security).GFI GFI Ground Fault Interrupter GFI Go For It GFI Government-Furnished Information GFI Growing Families International GFI Goodness of Fit Indices GFI Government Financial Institutions (Philippines) GFI Gross Farm Income have launched a freeware version of GFI MailEssentials for Exchange/SMTP 8. The free version allows incoming email to be checked against popular DNS (Domain Name System) A system for converting host names and domain names into IP addresses on the Internet or on local networks that use the TCP/IP protocol. For example, when a Web site address is given to the DNS either by typing a URL in a browser or behind the blacklists (also known as real time blacklists) at server level, prior to distributing the mail to network users. It also enables administrators to set up their own blacklists and includes a patented automatic whitelist management tool. Third party DNS blacklists (DNSBL (DNS BlackList or DNS Blackhole List) A system for identifying spammers based on their IP addresses. Most mail servers are able to query a DNSBL to determine if a specific IP address is on the list. ) DNS blacklists are databases of known spammers. through which administrators can check if a sending mail server is known or thought to send spare. Two recommended DNS blacklists supported by GFI MailEssentials 8 are http://.www.ordb.org and www.spamhaus.org. The ORDB list is a database maintained by ORDB.org, a non-profit organization A non-profit organization (abbreviated "NPO", also "non-profit" or "not-for-profit") is a legally constituted organization whose primary objective is to support or to actively engage in activities of public or private interest without any commercial or monetary profit purposes. that stores the IP addresses of verified open SMTP relays. These relays are likely to be used as conduits for sending unsolicited bulk email. By accessing this list, system administrators can choose to accept or reject e-mail exchange with servers at these addresses. The Spamhaus Block List (SBL SBL Society of Biblical Literature SBL Symbol Technologies, Inc. (NYSE symbol) SBL Spamhaus Block List SBL Space-Based Laser SBL Securities Borrowing and Lending SBL Supreme Beings of Leisure (band) ) is a free real time DNS-based database of IP addresses of verified spammers, spare gangs and spare services. Used by Internet service providers Internet service provider (ISP) Company that provides Internet connections and services to individuals and organizations. For a monthly fee, ISPs provide computer users with a connection to their site (see data transmission), as well as a log-in name and password. and corporate networks worldwide, the SBL currently protects an estimated 100 million mailboxes from persistent spare sources. How blacklist (1) A list of e-mail addresses of known spammers. See spam, spam filter, Blacklist of Internet Advertisers, greylisting and blackholing. Contrast with white list. (2) A list of Web sites that are considered off limits or dangerous. checking works Once an administrator installs GFI MailEssentials 8 on Exchange Server 2000, incoming mail is checked against the selected third party blacklist. No extra configuration is required. For each incoming mail, the IP of the sending mail server is queried against the list in a similar fashion as a DNS query If the sending mail server is on the blacklist, the mail is flagged as spam and optionally forwarded to a public folder. GFI MailEssentials also supports Exchange 5.5, Lotus Notes and SMTP (Simple Mail Transfer Protocol) The standard e-mail protocol on the Internet and part of the TCP/IP protocol suite, as defined by IETF RFC 2821. SMTP defines the message format and the message transfer agent (MTA), which stores and forwards the mail. mail servers. Automatic whitelist management The freeware version of GFI MailEssentials 8 also includes a patented automatic whitelist management tool. This feature eliminates the need for administrators to manually input approved addresses on the whitelist, because all business partners are added automatically. This way, their mail bypasses the spain filter and false positives are greatly reduced. Ability to configure local blacklists Another anti-spare feature included in the free version is the ability for Exchange administrators to create their own list of undesirable domains and email addresses from which they do not want to receive mail. Obtaining the freeware version The freeware version can be downloaded from http://www.gfi.com/mes. |
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