The Barracuda Spam & Virus Firewall is the industry's most trusted spam-blocking appliance for companies of all sizes. The Spam & Virus Firewall handles a massive amount of email, over 1.3 million messages per hour (model 800), without bogging down your email servers.
On top of its superior spam blocking capabilities, the Spam & Virus Firewall automatically provides anti-virus protection for all email users with
no per-user licensing fees!
SC Magazine’s Award - Winner Barracuda Spam & Virus Firewall Wins 2008 SC Magazine’s Excellence Award in Best SME Security Solution category and Barracuda IM Firewall Wins 2008 SC Magazine’s Reader Trust Award for the Best Instant Messaging Solution category.
How Much Is Spam Costing Your Organization?
The Cost of Spam hides itself in a number of different areas in and amongst your organization. These include:
- Lost productivity from your employees as they spend time sifting through unwanted emails
- Extra money spent on your email servers so that you can keep pace with the amount of Spam and legitimate emails they need to process
- The financial risk to your organization that a virus has if one of your users mistakenly opens an infected email and releases it into your internal network
A Comprehensive Spam Filtering Approach
The Spam & Virus Firewall is a powerful, enterprise-class solution. Multiple units can be clustered together for even greater capacity and high availability. The design of the Spam & Virus Firewall leverages open source virus and spam solutions in conjunction with multiple defense layers:
Barracuda Spam & Virus Firewall Datasheet
- Network Denial of Service Protection
- Rate Control
- IP Reputation Analysis
- Sender Authentication
- Recipient Verification
- Virus Scanning
- Policy (User-specified rules)
- Spam Fingerprint Check
- Intent Analysis
- Image Analysis
- Bayesian Analysis
- Rule-based Scoring

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Concerned About Losing Legitimate Email?
If you are concerned about whether you will lose legitimate email when the Barracuda Spam & Virus Firewall is in place, read the following Whitepaper. It discusses some of the advanced processes of the appliance and how your legitimate email is safeguarded.
Whitepaper: Comprehensive Email Filtering
Easy to Install & Maintain
The Barracuda Spam & Virus Firewall is a reliable and powerful spam blocking solution that is also extremely easy to install and maintain. There is no software to install and no modifications required to your existing email system. Once in place, the system administrator uses the intuitive web interface for monitoring and maintenance.
Maintenance is minimal, especially with the help of Energize Updates. These updates, automatically retrieved by the Barracuda Spam & Virus Firewall, enable maximum spam and virus protection at all times while eliminating administrative overhead. Updates are provided by Barracuda Central where engineers work around the clock monitoring the Internet for trends in spam and virus threats.
Model Specifications
We offer 7 models of the Barracuda Spam and Virus Firewall. For small offices (SMB) the Barracuda Spam and Virus Firewall 100 offers a world-class solution for up to 50 users. The model 300, for larger organizations, handles up to 1,000 active email users. The largest Spam And VirusFirewall model handles up to 30,000 active email users. These specifications are not limits of the system, but are the recommended capacity.
Download Barracuda Spam Firewall Datasheet
Download Outbound Model Datasheet
If you would like to speak to someone about which model is right for your organization, please do not hesitate to contact us.
| Active E-mail Users |
1 - 50 |
1 - 500 |
300 - 1,000 |
1,000 - 5,000 |
| Domains |
10 |
50 |
250 |
500 |
| Message Log Storage |
512MB |
1GB |
2GB |
10GB |
| Quarantine Storage |
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|
10GB |
50GB |
| Hardware |
100 |
200 |
300 |
400 |
| Rackmount Chassis |
1U Mini |
1U Mini |
1U Mini |
1U Mini |
| Dimensions (inches) |
16.7 x 1.7 x 14 |
16.7 x 1.7 x 14 |
16.7 x 1.7 x 14 |
16.7 x 1.7 x 14 |
| Dimensions (cm) |
42.4 x 4.3 x 35.6 |
42.4 x 4.3 x 35.6 |
42.4 x 4.3 x 35.6 |
42.4 x 4.3 x 35.6 |
| Weight (lbs) |
17 |
17 |
17 |
18 |
| Weight (kg) |
7.7 |
7.7 |
7.7 |
8.2 |
| Ethernet |
1x 10/100 |
1x 10/100 |
1x 10/100 |
1x 10/100 |
| AC Input Current (A) |
1.0 |
1.0 |
1.2 |
1.4 |
| Redundant Disk Array (RAID) |
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|
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| Hot Swap Redundant Power Supply |
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| ECC Memory |
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|
| Features |
100 |
200 |
300 |
400 |
| Spam Blocking |
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| Virus Scanning |
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| Compatible with all Email Servers |
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| Hardened & Secure OS |
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 |
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Outbound Email Filtering
|
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 |
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MS Exchange / LDAP Accelerator
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|
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Per User Settings & Quarantine
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|
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|
Syslog Support
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Clustering & Remote Clustering
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|
 |
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Per Domain Settings
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 |
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Single Sign-On
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 |
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SNMP / API
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|
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| STARTTLS Encryption Support |
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 |
 |
| Per User Score Settings |
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| Customizable Branding |
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|
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| Pricing Links |
100 |
200 |
300 |
400 |
| |
Pricing |
Pricing |
Pricing |
Pricing |
| Note: The capacity depends on environment and selected options. |
| Active E-mail Users |
3,000 - 10,000 |
8,000 - 22,000 |
15,000 - 30,000 |
25,000 - 100,000 |
| Domains |
5,000 |
5,000 |
5,000 |
5,000 |
| Message Log Storage |
20GB |
40GB |
60GB |
200GB |
| Quarantine Storage |
100GB |
200GB |
250GB |
750GB |
| Hardware |
600 |
800 |
900 |
1000 |
| Rackmount Chassis |
1U Full |
2U Full |
2U Full |
2U Full |
| Dimensions (inches) |
16.7 x 1.7 x 22.5 |
16.8 x 3.5 x 25.5 |
16.8 x 3.5 x 25.5 |
17.2 x 3.5 x 27.3 |
| Dimensions (cm) |
42.4 x 4.3 x 57.1 |
42.8 x 8.9 x 64.8 |
42.8 x 8.9 x 64.8 |
43.7 x 8.9 x 70.8 |
| Weight (lbs) |
35 |
40 |
48 |
56 |
| Weight (kg) |
15.9 |
18.1 |
21.8 |
25.4 |
| Ethernet |
2x Gigabit |
2x Gigabit 1x 10/100 |
2x Gigabit 1x 10/100 |
2x Gigabit 1x 10/100 |
| AC Input Current (A) |
1.8 |
4.1 |
5.4 |
7.2 |
| Redundant Disk Array (RAID) |
Hot Swap |
Hot Swap |
Hot Swap |
Hot Swap |
| Hot Swap Redundant Power Supply |
Hot Swap |
Hot Swap |
Hot Swap |
Hot Swap |
| ECC Memory |
 |
 |
 |
 |
| Features |
600 |
800 |
900 |
1000 |
| Spam Blocking |
 |
 |
 |
 |
| Virus Scanning |
 |
 |
 |
 |
| Compatible with all Email Servers |
 |
 |
 |
 |
| Hardened and Secure OS |
 |
 |
 |
 |
|
Outbound Email Filtering
|
 |
 |
 |
 |
|
MS Exchange / LDAP Accelerator
|
 |
 |
 |
 |
|
Per User Settings & Quarantine
|
 |
 |
 |
 |
|
Syslog Support
|
 |
 |
 |
 |
|
Clustering & Remote Clustering
|
 |
 |
 |
 |
|
Per Domain Settings
|
 |
 |
 |
 |
|
Single Sign-On
|
 |
 |
 |
 |
|
SNMP / API
|
 |
 |
 |
 |
| STARTTLS Encryption Support |
 |
 |
 |
 |
| Per User Score Settings |
 |
 |
 |
 |
| Customizable Branding |
 |
 |
 |
 |
| Pricing Links |
600 |
800 |
900 |
1000 |
| |
Pricing |
Pricing |
Pricing |
Pricing |
 |
| Note: The capacity depends on environment and selected options. |
Key Features
It's time to take control of spam! The Barracuda Spam Firewall is an integrated hardware and software solution that has the power of an enterprise-class solution, and the ease-of-use and affordability that businesses of all sizes demand.
The Spam Firewall includes the features you need to eliminate your spam and completely protect your email server from all forms of attack. Email may be blocked, quarantined, tagged, or delivered based on the policies of the organization or the preferences of the individual user.
Protection from Email Threats
The Barracuda Spam Firewall provides comprehensive protection against the most current email-borne threats that can cripple your network if left unprotected. With our proprietary twelve-layer defense system, the Barracuda Spam Firewall optimizes performance of your email server while utilizing the following protections:
- Anti-spam
The anti-spam algorithms and methods used by the Barracuda Spam Firewall are the most comprehensive and most advanced in the industry at detecting and filtering spam resulting in the lowest rate of false positives.
- Anti-virus
By utilizing dual layer virus blocking, decompression of archives and file type blocking, the Spam Firewall anti-virus engine provides complete virus protection.
- Anti-spoofing
This technology prevents the use of forged or "spoofed" sender addresses on unsolicited email. The anti-spoofing feature also allows larger organizations to specify a list of IP addresses that are allowed to have a "From" address that appears from inside the organization to support multiple sites and multiple email servers.
- Anti-phishing
The Barracuda Spam Firewall provides robust protection against phishing schemes which are often used to gather confidential information about an organization or its individual users.
- Anti-spyware (Attachments)
All attachments are scanned and any spyware executables are detected and eliminated immediately.
- Denial of Service Protection
Rate controls are utilized to stop denial of service attacks as well as dictionary based spam attacks. These rate control systems are integrated and automatic in the Barracuda Spam Firewall.
Protection from Image-based Spam
In recent months, Barracuda Central has recorded a nearly 500 percent increase in image-based spam. In a large number of these cases, many of these images also contain text. Using OCR (Optical Character Recognition) techniques in combination with unique fingerprint methods, the Barracuda Spam Firewall has proven to be an effective protective force against image-based spam. Fingerprint analysis is capable of blocking image spam regardless of whether images contain text.
Barracuda Networks also developed methods to uniquely fingerprint components of spam messages, including images. Barracuda Central collects these spam fingerprints from honeypots as well as from thousands of Barracuda Spam Firewalls belonging to customers who opt-in to submit spam messages for analysis. Using this vast database of spam fingerprints, the Barracuda Spam Firewall’s new fingerprint analysis can profile message components of new spam emails against known spam fingerprints and automatically block, quarantine, or tag messages based on a match.
End-user Control Features
The Barracuda Spam Firewall features an easy-to-use Web interface, making management and administration of the appliance easy and cost effective. The Web interface allows you to define, manage and control corporate email policies from one central place.
- User-based Filtering
The Barracuda Spam Firewall can be configured to set spam policies by the end user on an individualized basis or on a global corporate level.
- Individual Spam Scoring
The individual spam scoring feature allows end users to set their individual thresholds for spam tolerance providing personalized control over spam policies.
- Personal Allow and Block Lists
The Barracuda Spam Firewall can be configured to allow end users to have control over their individual allow and block lists which further reduces the chance of false positives.
- End-User Quarantine
The Barracuda Spam Firewall provides the ability to setup quarantine mailboxes where users can direct questionable email for later review. This greatly reduces the support load for large organizations.
- Digest Emails
A daily email is sent to all end users with a quarantine account summarizing the contents of their individual quarantine mailboxes.
- Microsoft Outlook and Lotus Notes Integration
Barracuda Networks provides a software plug-in for both Microsoft Outlook and Lotus Notes end users. With this tool, users can classify messages as spam or not spam in order to fine-tune the filtering and further eliminate any chance of false positives.
Simplified & Centralized Administration
The Barracuda Spam Firewall features an easy-to-use Web interface, making management and administration of the appliance easy and cost effective. The Web interface allows you to define, manage and control corporate email policies from one central place.
- Multilingual User Interface
The Barracuda Spam Firewall features a user interface available in Chinese (simplified and traditional), German, French, Spanish, Japanese, Dutch and English.
- Barracuda Energize Updates
A team of security engineers at Barracuda Central continuously monitors the Internet for trends in spam and virus attacks. As they detect trends, Energize Updates are created and distributed to all Barracuda Spam Firewalls, which are automatically updated with new spam rules, spam algorithms, and virus definitions. These updates require zero administration and ensure that your network has comprehensive and accurate protection even as the methods of attack change.
- Logs and Graphical Reports
System administrators can view logs or generate graphical reports to provide visibility within the organization. The Barracuda Spam Firewall can generate reports on top email users, top spam recipients, top spam senders, and more.
- No Per User Charges
With the Barracuda Spam Firewall there are no per user charges so the system administrator no longer has to worry about keeping track of new accounts.
- Multiple Domains & Multiple Email Servers
A single Barracuda Spam Firewall can be used for multiple email servers and for multiple domains resulting in lower administrative costs.
Protection for Large Enterprises
The Barracuda Spam Firewall models 600 and 800 were engineered to meet the specific needs of large enterprises. These models offer all the scalability, redundancy and reliability needed for large-scale deployments at an affordable price.
- Easy Integration with existing Networks
The Barracuda Spam Firewall integrates with any IT infrastructure no matter how geographically or logically diverse.
- Clustering Multiple Barracuda
Spam Firewall models 600 and 800 can also be clustered for automatic scalability, redundancy and fault tolerance.
- Hot Swap Redundant Disk Array and Power Supply
These features provide a total solution for reliable fault tolerant data storage management necessary for large enterprises.
- Plug and Play Installation
Deploying the Barracuda Spam Firewall is extremely easy. There is no software to install or modifications necessary to your existing email systems, greatly reducing the time and resources required for installation and ongoing support.
- LDAP and Microsoft Active Directory Integration
Directory server integration allows for single sign on and recipient verification.
Deployment Configurations
The standard deployment configuration of the Barracuda Spam Firewall consists of a single email server and a single Spam Firewall appliance. Simply connect the Barracuda Spam Firewall to your network by assigning it a new IP address and changing your MX record to point to the Barracuda Spam Firewall.
Alternatively, you may also give your email server a new IP address and give the old IP address to the Barracuda Spam Firewall.

Multiple Email Server Environment
The Barracuda Spam Firewall supports multiple email servers and multiple domains.

Fault Tolerant Barracuda Spam Firewall Environment
For automatic scalability, redundancy and fault tolerance, you may cluster multiple Barracuda Spam Firewalls.

Multiple Email Server Location Environment
The Barracuda Spam Firewall can also be used in environments where there are multiple email server locations. For optimal performance, a Barracuda Spam Firewall should be placed in each location that contains an email server. This remote clustering capability can greatly simplify control and administration.

Spam Firewall Documentation
DataSheets
Guides:
Spam Firewall Training Videos
Feel welcome to browse the videos that we've assembled, from Barracuda. Training Videos are short instructional movies covering the setup, configuration or tuning of Barracuda Networks Devices.
If you prefer, we would be glad to set up a Webinar at a time where one of our Barracuda Spam Firewall specialists can walk you through the web interface and answer questions you may have about the features. Contact us for details.
Spam Firewall Web Admin Screenshots
The following screenshots illustrate the Web administration interface of the Barracuda Spam Firewall. We also have screenshots available of the "User Settings and Quarantine" interface for End Users:
Basic > Status
Shows the number of emails received and statistics on how they were processed.
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Basic > Message Log
Provides an entry for each message showing how it was processed and where it was routed. Allows email to be added to the Bayesian filter algorithm and fingerprinted.
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Basic > Spam Scoring
Controls for setting the score levels for Tagging, Quarantine, and Blocking of emails.
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Basic > Virus Checking
Controls for enabling and disabling Virus Checks.
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Advanced > Rate Control (Outbound Mode)
Use rate controls for outbound spam protection.
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Advanced > Relays (Outbound Mode)
Set a specific mail server and port for each mail domain you host.
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Advanced > Retry (Outbound Mode)
Set number of retries to send per message and amount of time between retries.
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Basic > Allowed Senders (Outbound Mode)
Customize list of users allowed to send outbound email.
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Basic > Footer (Outbound Mode)
Customize a footer to be attached to all outbound emails.
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Basic > Status (Outbound Mode)
Shows the number of emails blocked and statistics on how they were processed.
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Advanced > Email Protocol (Outbound Mode)
Set email protocol for outbound spam protection.
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Security > Attachment Filtering (Outbound Mode)
Adjust which attachments are blocked and quarantined.
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Basic > Quarantine
Controls to set up quarantine locations.
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Basic > IP Configuration
Change the IP address of the Barracuda Spam Firewall and its network information.
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Basic > Administration
Change Password, Time Zone, and Security settings.
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Basic > Bayesian / Fingerprinting
Sets fingerprinting, displays Bayesian learning statistics and provides Bayesian Backup/Restore functions.
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Block / Accept > External Blacklists
Turn RBLs and blacklists on/off. Add additional RBL.
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Block / Accept > IP Block / Accept
Make entries to blacklist or whitelist IP addresses.
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Block / Accept > Sender Domain Block / Accept
Make entries to blacklist or whitelist sender domains.
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Block / Accept > Email Sender Block / Accept
Make entries to blacklist or whitelist the email address of senders.
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Block / Accept > Email Recipient Block / Accept
Make entries to blacklist or whitelist the email address of recipients.
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Block / Accept > Attachment Filtering
Adjust which attachments are filtered and quarantined.
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Block / Accept > Subject Filtering
Enter keywords to Block or Quarantine words in the subject.
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Block / Accept > Body Filtering
Body blocking lets you manipulate delivery of a message based on characteristics of the body of the message.
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Block / Accept > Header Filtering
Enter keywords to Block or Quarantine words in the header.
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Users > Account View
Displays user accounts.
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Users > User Features
Sets users ability to Quarantine, Spam Scan, Notify, Whitelist/Blacklist and Score Spam.
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Users > User Add / Update
Create and edit user accounts.
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Users > User Backup / Restore
Provides user setting Backup/Restore functions.
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Domains > Domain Manager
Select domain to edit.
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Domains > Domain Edit
Edit domain controls and scoring.
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Domains > LDAP/MS Exchange Accelerator Edit
Edit domain LDAP setting.
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Advanced > Email Protocol
Set email protocol for spam protection.
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Advanced > Rate Controls
Use rate controls for spam protection.
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Advanced > Configuration Backup / Restore
Backup/Restore configuration.
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Advanced > Energize Updates
Sets spam and virus update intervals.
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Advanced > Firmware Update
Provides firmware download options.
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Advanced > Appearance
Sets appearance of Web interface and quarantined emails.
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Advanced > Syslog
Sets syslog server connection.
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Advanced > Clustering
Cluster two or more Barracuda Spam Firewall units together to share configuration and to provide reduncancy.
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Advanced > Single Sign-On
Create single sign-on authentication ability.
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Advanced > SSL
Create SSL functionality for authentication.
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Advanced > Bounce/NDR Messages
Set customize bounce messages.
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Advanced > Troubleshooting
Troubleshoot network connectivity and DNS set-up.
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Spam Firewall Web Users Screenshots
The following screenshots illustrate the End-User settings and quarantine interface of the Barracuda Spam Firewall.
Quarantine Inbox
Shows the emails held in the Quarantine Inbox.
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Preferences > Whitelists / Blacklists
Add / Delete email addresses and domains to Whitelists / Blacklists.
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Preferences > Quarantine Settings
Settings for quarantine notification.
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Preferences > Spam Settings
Controls for setting the score levels for Tagging, Quarantine, and Blocking of emails.
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