Open Relay Filter - a DNS blacklist (DNSBL, RBL) based anti-spam add-on for Windows Exchange servers that protects your mail servers from being flooded by unsolicited bulk emails.
Block spam efficiently at the source: ORF is an anti spam filter and email filter for Exchange which performs filtering on the server-side, so you don't need a separate Outlook spam filter or Exchange spam filter for every client. ORF can be configured very easily. If you are looking for a more flexible, more effective Exchange anti spam blocker or IIS spam filter, we recommend that you have a look at ORF. This Microsoft Exchange spam filter was designed with performance and flexibility in mind. Our spam filter for Exchange server stops spam and monitors the SMTP sessions on your mail server while stopping the mail coming from so-called "open relays" and other spam sources listed by DNSBL Exchange (DNS BLacklist, also known as "black DNS lists") spam source databases. The Exchange 2007 spam filter, Exchange 2003 spam filter and Exchange 2000 spam filter supports blacklisting senders, IP addresses, disabling local mailboxes and filtering mail coming from fake, non-existing sources for efficiently blocking exchange server spam while not interfering with the mails from your daily work. ORF is the ideal Exchange spam filter for completely protecting your Microsoft environment from drowning in spam mails, making a separate Outlook spam filter unnecessary. ORF checks links found in emails in SURBL Exchange databases and detect spam emails. SURBLs are online databases of "spamvertized" domains. ORF provides Greylisting - another anti-spam feature based on temporary rejection of emails from unknown senders. Auto Whitelist - A self-learning whitelist which monitors your outgoing emails and builds a sender email address whitelist from the recipients of the outgoing emails. In other words, the recipients of the emails that you send become whitelisted senders. ExchangeSpamFilter Exchange2000SpamFilter Exchange2003SpamFilter Exchange Spam Filter , Exchange 2000 Spam Filter . Exportable/importable lists - The IP, sender and recipient whitelists and blacklists can be exported/imported to and from various text formats, including CSV which can be imported by Microsoft Excel. DNS blacklist definitions, keyword and attachment filtering expression and other type of lists can be exported/imported in XML format. Real-time statistics - The Enterprise Edition provides real-time statistics about its activity. Statistics can be sent automatically to our company which creates DNS blacklist popularity statistics from user reports. These statistics can be viewed on our website (see DNS blacklist statistics). IP blacklist, sender and recipient email blacklists ORF allows you to block specific IP addresses (and IP ranges), message senders or message recipients (local mailboxes) as determined in the blacklists. The IP blacklist supports both IP addresses and subnet definitions. Addresses on the sender/recipient blacklist can be defined by either the address, simple wildcarded mask or Perl-compatible regular expressions. Exchange 2003 Spam Filter Exchange 2007 Spam Filter Exchange Anti Spam , SMTP Service Spam Filter IIS Spam Filter . Monitoring and reporting: ORF produces detailed, customisable logs that can be browsed and filtered by a built-in log viewer. Real-time statistics and detailed printable reports help to fine-tune performance and understand your email traffic better. ORF offers excellent spam filtering performance and it is configurable to every detail. Unlike most of the competing products, ORF is licensed per server (with a single server license available). Feature Highlights include: Wide range of filtering tools; ORF has more than a dozen built-in tests to ensure filtering performance with a low number of false positives. Low false positive rate: Auto Sender Whitelist. By monitoring outbound emails, this feature automatically builds a list of your partners and automatically excludes them from filtering, without having to manually maintain a list of trusted senders. ORF is a spam filter for Microsoft Exchange servers and the IIS SMTP Service. ORF employs a wide variety of spam filtering technologies, such as DNS blacklists, SURBLs, Greylisting and many others to identify spam and other kind of unwanted email. Microsoft Exchange Spam Filter Outlook Spam Filter , Anti Spam Filter . SPF client - The Sender Policy Framework (SPF) is an email authentication protocol which helps recognizing email address forgery. As most of the spam arrives with forged sender address, SPF can do a great job in reducing spam. Best Spam Filter Email Filter , Mail Filter . ORF is shipped with a predefined set of selected DNS blacklist definitions, but users can also extend the definitions. Recipient validation - This feature can be used to validate recipients and accept emails only for valid users. Spam is often sent with fake sender email address that which do not exist to recipients that are no longer or never been valid, which results in a large number of NDR's filling up the mail queue. Validation can happen based on the Active Directory, SQL databases or text address lists. Exchange 2007 Anti Spam Spam Filter Download , Spam Filter for Exchange Server Spam Filter . Automatic Sender Whitelist - A self-learning whitelist which monitors your outgoing emails and builds a sender email address whitelist from the recipients of the outgoing emails. In other words, the recipients of the emails that you send become whitelisted senders. SMTP Spam Filter Spam Filter for Exchange Server Greylisting DNSBL Exchange , DNS Blacklist . SURBLs are online databases of "spamvertized" domains. ORF can check the links found in emails in these databases and so detect spam emails. Multiple SURBLs can be used concurrently and the default SURBL definition set can be extended. SURBL Exchange , SPF Exchange . Auto Whitelist
|
| |||
|
Vamsoft offers ORF, an exchange spam filtering solution for the growing number of spam we receive everyday. Blocking Exchange server spam is as easy as installing a new service that plugs into the STMP traffic and uses DNS Blacklists (DNSBL) and several other means of identifying spam mail.