This just in from Barracuda Networks regarding the latest firmware upgrade for their Spam Firewall …
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Technical Alert No. 20080722
Description: Configuration changes to all Barracuda Spam Firewalls upon upgrade to Firmware Release 3.5.12
Revision: A1.0
Affected Barracuda Networks Products: Barracuda Spam Firewall Release 3.5.12
Details: On July 14, 2008, Barracuda Networks released Barracuda Spam Firewall Release 3.5.12.001 into beta release. Upon upgrading to firmware release 3.5.12, three one-time configuration changes will be made to your Barracuda Spam Firewall:
- Disabling of bounce messages. On the Basic -> Spam Scoring page, in the Spam Bounce (NDR) Configuration section, the Send Bounce field will be set to No. Because of the growing number of spam emails spoofing addresses of good email senders, this change is being made to avoid sending bounce messages to innocent parties.
- Removal of Spamhaus external block lists previously listed as “Common External Blacklists.” On the Block/Accept -> IP Reputation page, the following Spamhaus external block lists will be removed from the Custom External RBLs list: sbl.spamhaus.org, xbl.spamhaus.org and sbl-xbl.spamhaus.org.The Barracuda Spam Firewall used to enable Spamhaus external block lists by default when usage of those lists was free to all Internet users. Now that Spamhaus is seeking license fees from some Internet users, this change is being made to remove the previous default settings and to ensure that Barracuda Spam Firewall customers do not experience problems or unexpected service interruptions.
- Replacement of removed Spamhaus external block lists with Barracuda Reputation. If any Spamhaus external block lists were removed by the previous action and the Barracuda IP Reputation field was set to Off, the Barracuda IP Reputation will be set to the most restrictive action of all of the removed Spamhaus external block lists.For example, if sbl.spamhaus.org was set to Block and Barracuda IP Reputation was set to Off, the upgrade would remove sbl.spamhaus.org from the Custom External RBLs list and set Barracuda IP Reputation to Block.The purpose of this change is to maintain or improve performance of the Barracuda Spam Firewall. Barracuda Networks strongly recommends blocking based on Barracuda IP Reputation, and this blocking is particularly important when external block lists such as Spamhaus are not in use.
These changes will be made only once. If you want to re-enable bounce messages and reinsert the affected Spamhaus external block lists, you may do so manually after the upgrade.
Barracuda Networks recommends that you create a new backup of your configuration after upgrading to firmware release 3.5.12.
Risk Rating: None
For More Tech Alerts: www.BarracudaNetworks.com/ns/support/tech_alert.php
For more information on Barracuda Spam Firewall’s please go to: http://www.BarracudaNetworks.ca
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