This guide describes how you can use the Barracuda Spam Firewall web interface to:
The guide also covers use of the Barracuda Microsoft Outlook Add-in for classifying messages as spam or not spam and encrypting outbound messages. The Add-in might be installed in your Microsoft Outlook mail client by your administrator or by you, depending on how the system is configured.
Some features covered in this guide may not appear on your system, depending on your level of permissions as set by your administrator.
In this article:
The Barracuda Spam Firewall sends you the following two types of messages:
The first time the Barracuda Spam Firewall quarantines an email intended for you, the system sends you a greeting message with a subject line of User Quarantine Account Information. The greeting message contains the following information:
Welcome to the Barracuda Spam Firewall. This message contains the information you will need to access your Spam Quarantine and Preferences.
Your account has been set to the following username and password:
Username: <your email address>
Password: <your default password>
Access your Spam Quarantine directly using the following link:
http://<barracuda system address or name>:8000
The Barracuda Spam Firewall automatically provides your login information (username and password) and the link to access the quarantine interface. You should save this email because future messages from the system do not contain your login information.
The Barracuda Spam Firewall sends you a daily quarantine summary report so you can view the quarantined messages you did not receive. From the quarantine summary report you can also add messages to your whitelist, delete messages, and have messages delivered to your inbox.
The following shows an example of a quarantine summary report:
Figure 1: Example quarantine summary report ('digest')
At the end of every quarantine summary report is a link to the quarantine interface where you can set additional preferences and classify messages as spam and not spam.
To log into your quarantine interface:
After logging into the quarantine interface, select the QUARANTINE INBOX tab to view a list of your quarantined messages. When you first start using the quarantine interface, you should view this list on a daily basis and classify as many messages as you can. Clicking on an email displays the message.
The Barracuda Spam Firewall has a Bayesian learning engine which, if enabled by your administrator, learns how to deal with future messages based on the ones you classify as spam and not spam. The learning engine becomes more effective over time as you teach the system how to classify messages and as you set up rules based on your whitelist and blocklist.
The following table describes the actions you can perform from this page.
|Deliver||Delivers the selected message to your standard inbox.|
Note: If you want to classify a message or add it to your whitelist, make sure to do so before delivering the message to your inbox. Once the Barracuda Spam Firewall delivers a message, it is removed from your quarantine list.
Whitelist Adds the selected message to your whitelist so all future emails from this sender are not quarantined unless the message contains a virus or banned attachment type.
The Barracuda Spam Firewall adds the sending email address exactly as it appears in the message to your personal whitelist.
Note that some commercial mailings may come from one of several servers such as mail3.abcbank.com, and a subsequent message may come from mail2.abcbank.com. See the section on managing your whitelists and blocklists for tips on specifying whitelists with greater effectiveness.
Deletes the selected message from your quarantine list. The main reason to delete messages is to help you keep track of which quarantine messages you have reviewed. You cannot recover messages you have deleted.
|Classify as Not Spam||Classifies the selected message as not spam. Note: Some bulk commercial email may be considered useful by some users and spam by others. For this reason, classifying such messages may not be very effective because users may counteract each others’ classification. Instead of classifying bulk commercial email, it may be more effective to add it to your whitelist (if you wish to receive such messages) or blocklist (if you prefer not to receive them).|
|Classify as Spam||Classifies the selected message as spam.|
After logging into your quarantine interface, depending on your account permissions, you can use the PREFERENCES tab to change your account password, modify your quarantine and spam settings, and manage your whitelist and blocklist.
To change your account password, do one of the following:
In the provided fields, enter your existing password and enter your new password twice. Click Save Changes when finished.
The following table describes the quarantine settings you can change from the PREFERENCES > Quarantine Settings page, depending on how the administrator has configured your account:
Whether the Barracuda Spam Firewall quarantines your messages.
If you select Yes, the Barracuda Spam Firewall does not deliver quarantined messages to your general email inbox, but you can view these messages from the quarantine interface and quarantine summary reports.
If you select No, all messages that would have been quarantined for you are delivered to your general email inbox with the subject line prefixed with [QUAR]:. The Barracuda Spam Firewall administrator can modify this prefix.
|Notification Interval||The frequency the Barracuda Spam Firewall sends you quarantine summary reports. The default is daily. The Barracuda Spam Firewall only sends quarantine summary reports when one or more of your emails have been quarantined.|
If you select Never, you can still view your quarantined messages from the quarantine interface, but you will not receive quarantine summary reports.
|Notification Address||The email address the Barracuda Spam Firewall should use to |
deliver your quarantine summary report. Leave this field blank to use the email address associated with your user account.
|Default Language||The language in which you want to receive your quarantine notifications. |
This setting also sets the default encoding for handling unknown character sets during filtering. All email notifications from the Barracuda Spam Firewall are in UTF8 encoding.
If you do not want the Barracuda Spam Firewall scanning your emails for spam content, you can disable spam filtering from the PREFERENCES > Spam Settings page. From this page you can also change the default spam scoring levels that determine when your emails are tagged, quarantined or blocked.
When the Barracuda Spam Firewall receives an email for you, it scores the message for its spam probability. This score ranges from 0 (definitely not spam) to 10 or higher (definitely spam). Based on this score, the Barracuda Spam Firewall either allows, quarantines, or blocks the message.
A setting of 10 for any setting disables that option. The following table describes the fields on the PREFERENCES > Spam Settings page.
The PREFERENCES > Whitelist/Blocklist page lets you specify email addresses and domains from which you do or do not want to receive emails.
|Whitelist||The list of email addresses or domains from which you always wish to receive|
messages. The only time the Barracuda Spam Firewall blocks a message from someone on your whitelist is when the message contains a virus or a disallowed attachment file extension.
|Blocklist||The list of senders from whom you never want to receive messages. The Barracuda Spam Firewall immediately discards messages from senders on your blocklist. These messages are not tagged or quarantined are not tagged or quarantined and cannot be recovered.|
The sender does not receive a notice that the message was deleted, and neither do you. The only time a blocklisted email address is delivered is if the same email address also appears in your whitelist.
To whitelist senders or to add senders to your blocklist, follow these steps:
Tips on specifying addresses
When adding addresses to your whitelist and blocklist, note the following tips:
Changing the Language of the Quarantine Interface
You can change the language of your quarantine interface by selecting a language from the dropdown menu in the upper right corner of the QUARANTINE INBOX and PREFERENCES tabs. Supported languages include Chinese, Japanese, Spanish, French, and others. The language you select is only applied to your individual quarantine interface. No other user’s interface is affected.
Instead of using your quarantine inbox to classify your email messages, you can download a client add-in that lets you classify messages from your MS Outlook application. Your Barracuda Spam Firewall administrator may chose not to make this add-in available. If this is the case, you need to log into your quarantine inbox to classify your messages.
Downloading the Add-in
To download and install the client add-in that is needed to classify messages from MS Outlook:
Classifying Messages as Spam or Not-Spam
After downloading and installing the add-in, you can begin classifying messages using the green checkmark and the red X buttons in your MS Outlook client. The green button marks messages as not spam and the red button marks messages as spam.
The MS Outlook add-in is configured to automatically:
Optional Message Encryption
With the Barracuda Spam Firewall 5.1 or later, choose to encrypt any outbound message by clicking the Encrypt Message button that appears in the Outlook New Message window, as shown in Figure 3, when the add-in is installed. The recipient of the message will retrieve it from the Barracuda Message Center.
Figure 3. Encrypting a message from Microsoft Outlook
You can change the default behavior of the Outlook Add-in by going to the Tools menu in your MS Outlook client and selecting Options | Spam Firewall tab.