Barracuda Networks 4 Installationsanleitung PDF herunterladen (Seite 57)

Basic Tab 57

Reducing Backscatter

By default, your Barracuda Spam Firewall is configured to send a bounce notification (also known as

a non-delivery report) to a sender when the Barracuda Spam Firewall blocks their e-mail.This is done

to alert legitimate senders that their message has not been delivered to the recipient. However, if the

e-mail came from an illegitimate source like a spammer then sending a bounce notification is not

necessary. Sending bounce messages to illegitimate senders is known as backscatter.

Backscatter can increase the load on your Barracuda Spam Firewall and may generate a lot of e-mail

to fake addresses.

If your Barracuda Spam Firewall rarely blocks a legitimate e-mail, consider turning off bounce

notification to reduce backscatter.

To turn off notifications:

1. Turn off virus notification:

1a. On the Basic > Virus Checking page, set the two Virus Notification settings to No.

1b. Click Save Changes.

2. Turn off bounce notifications:

2a. On the Basic > Spam Scoring page, set the Send Bounce field to No.

2b. Click Save Changes.

3. Turn off attachment notifications:

3a. On the Block/Accept > Attachment Filtering page, set the Block Notification fields to

No.

3b. Click Save Changes.

Changing the Language of the Administration Interface

You can change the language of the administration interface by selecting a language from the drop-

down menu in the upper right corner of the window. 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.

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Barracuda Networks 4 Installationsanleitung Seite 57