- Multiple DNS blacklists: ORF Enterprise Edition supports using multiple DNS blacklists at the same time, which greatly increases the effectiveness of spam filtering.
- Reverse DNS test: Using the reverse DNS (RDNS) test you can reject emails coming from fake, non-existent domains.
- DNS cache: The Enterprise Edition can keep the DNS lookup results in an internal cache for a user-specified period of time. This saves you bandwidth and increases spam filtering speed.
- Bonded Sender™ Program DNS whitelist support: IronPort Systems Inc's Bonded Sender™ Program provides a public DNS whitelist. ORF can use this whitelist to recognize trusted senders. More information about this program is available at http://www.bondedsender.org.
- Extensible DNS blacklist definitions: The Enterprise Edition allows you to define your own DNS blacklist list definitions. You can add new DNS blacklists and using the blacklist definition export/import feature, you can share your definitions with other ORF users.
- Shipped with predefined DNS blacklist definitions: The ORF EE package contains a list of DNS blacklists which can be used immediately following the installation.
- IP whitelist, sender and recipient email whitelists: You can create a list of exceptions that will not be tested/filtered by ORF. The whitelists can be built based on IP address, as well as the email address of the sender or recipient. The IP addresses can be specified using direct definitions (the IP address itself) or by using subnet masks. The sender/recipient whitelist also supports using masks to specify the email address to be whitelisted. Masks can be specified using simple wildcards or using Perl-compatible regular expressions (regex).
- IP blacklist, sender and recipient email blacklists: ORF EE allows you to block specific IP addresses (and IP ranges), message senders or message recipients (local mailboxes) as determined in the blacklists. Mails coming from the blocked hosts or coming to the disabled mailboxes will be rejected. The IP addresses can be specified using direct definitions (the IP address itself) or by using subnet masks. The sender/recipient blacklist also supports using masks to specify the email addresses to be blacklisted.
- Active Directory integration: Unlike other mail servers, Exchange 2000 does not reject mails coming to mailboxes that do not exist. Exchange 2000 accepts the mail for delivery and bounces the email later if the recipient mailbox is unavailable. Spam is often sent with fake sender email address that does not exist to recipients that are no longer valid, which results in tons of NDR's filling up the mail queue. Using the ORF's Active Directory integration you can reject all mails that are addressed to mailboxes that are no longer (or never been) valid and accept mails only to mailboxes that exists in the Active Directory.
- Exportable/importable address lists: The IP, sender and recipient whitelists and blacklists can be imported/exported to and from various text formats, including CSV which can be imported by Microsoft® Excel®.
- 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.
- Customisable log: ORF EE supports log customisation. You can select which events should be logged (based on the severity of the event and/or the event category), you can specify the verbosity of the log and the log file name format. Multiple log devices are supported, including ORF simple text log, Windows Event Log and Unix syslog.
- Mail notifications: You can request mail notifications about specific events that occur ORF Enterprise Edition (e.g. when some specific is rejected or when an error occurs).
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Works on Windows 2000, Windows XP, Windows Server 2003
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