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116 Barracuda Spam Firewall Administrator’s Guide

Enabling Intent Analysis and Spam Scoring

By default, intent analysis and spam scoring are disabled in outbound mode so your outgoing

messages are not scanned for spam probability or offending URLs.

To change this default behavior, select

Advanced > Spam Scoring to enable intent analysis and spam

scoring of outgoing messages.

The following table describes the fields on this page.

Messages per SMTP

Session

Sets a limit on the number of messages allowed in one SMTP session. If the

number of messages in one session exceeds this threshold the rest of the

messages are temporarily blocked and show up in the message log as being

Deferred with a reason of Per-Connection Message Limit Exceeded.

The sender is required to make a new connection to continue sending

messages, which may ultimately trigger a Rate Control block.

Table 8.6:

Spam Scoring Limits

Spam Scoring Whether spam scoring is turned on or off. Spam scoring is turned off

when a Barracuda Spam Firewall is configured for outbound mode.

After turning on spam scoring, you should configure the quarantine and

block scores described below.

Quarantine Score Messages with a score above this threshold, but below the block

threshold, are forwarded to the quarantine inbox described in Managing

the Quarantine Box on page 117.

Note: Spam Scoring must to set to Yes for the quarantine score to take

effect.

Block Score Messages with a score above this threshold are not delivered to the

recipient and the Barracuda Spam Firewall sends a non-delivery receipt

(NDR/bounce message) to the sender.

Note: Spam Scoring must to set to Yes for the quarantine score to take

effect.

Intent Analysis

Intent Analysis When Intent Analysis is turned on, your Barracuda Spam Firewall tries to

match the URLs contained in outgoing messages against a local

database of URLs known for sending spam.

If the system finds a match, the outgoing message that contains the

offending URL is automatically blocked.

Systems configured for outbound mode have Intent Analysis turned off

by default.

Note: The local database that contains the list of offending URLs is

updated on a regular basis by Energize Updates.

Table 8.5:

Field Description

1 2 ... 111 112 113 114 115 116 117 118 119 120 121 ... 141 142

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