Spamhaus DBL Blacklist Definition
What Is This?
This page guides you during the installation of the Spamhaus DBL in ORF. Recently, Spamhaus has announced their new list called the Spamhaus Domain Block List (DBL). Updating ORF with this blacklist can improve the spam filtering efficiency.
How Can I Use DBL?
Either you can:
- Option A: Update the entire definition set (recommended),
- Option B: Import the DBL definition only.
Option A: Updating The Entire Definition Set
Follow the instructions below to update the entire definition set. This is recommended method (it also works around a recently discovered bug affecting some URIBL definitions).
Click the link below to download the definition for all URL Blacklists. Save the file to the disk.
- Start the ORF Administration Tool.
- Expand Configuration / Filtering - On Arrival / URL Blacklists on the left navigation pane.
- Right-click anywhere in the list and select Import Definitions.
- Select the surbls-100302.xml file that you downloaded.
- Make sure the Delete current definitions not listed here (full overwrite) checkbox is checked and click OK.
- Check the box of the blacklists you want to use in the DNSBL list (we recommend using Spamhaus DBL, SURBL: Combined and uribl.com).
Spamhaus strictly forbids querying IP addresses against the DBL (you should use the DNS Blacklist of ORF for that), so you should prevent this by adding an exception in ORF. While this is not ideal, you probably gain more by using DBL than you lose by not checking IPs against other URIBLs. The next ORF version will address this issue. To add the exception:
- Start the ORF Administration Tool.
- Expand Configuration / Filtering - On Arrival / URL Blacklists on the left navigation pane.
- Click the Exceptions button.
- Click New.
- Copy and paste the following expression to the Domain expression field:
^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$ - Set the expression type to Regular expression.
- Add a comment so you can identify the expression later, and test the expression to make sure it works correctly.
- Click OK, then OK again.
Select Configuration | Save Configuration from the menu to update the configuration. If you use an older version (pre-4.3) select Configuration | Save and Update Configuration.
Option B: Importing Spamhaus DBL Only
Please follow the instructions below to import the Spamhaus DBL definition only.
Click the link below to download the definition for the Spamhaus DBL URL Blacklist. Save the file to the disk.
- Start the ORF Administration Tool.
- Expand Configuration / Fintering - On Arrival / URL Blacklists on the left navigation pane.
- Right-click anywhere in the list and select Import Definitions.
- Select the spamhaus-dbl.xml file that you downloaded in step one.
- Uncheck the Delete current definitions not listed here (full overwrite) checkbox and click OK.
- Check the box of Spamhaus DBL in the URIBL list.
Spamhaus strictly forbids querying IP addresses against the DBL (you should use the DNS Blacklist of ORF for that), so you should prevent this by adding an exception in ORF. While this is not ideal, you probably gain more by using DBL than you lose by not checking IPs against other URIBLs. The next ORF version will address this issue. To add the exception:
- Start the ORF Administration Tool.
- Expand Configuration / Filtering - On Arrival / URL Blacklists on the left navigation pane.
- Click the Exceptions button.
- Click New.
- Copy and paste the following expression to the Domain expression field:
^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$ - Set the expression type to Regular expression.
- Add a comment so you can identify the expression later, and test the expression to make sure it works correctly.
- Click OK, then OK again.
Select Configuration | Save Configuration from the menu to update the configuration. If you use an older version (pre-4.3) select Configuration | Save and Update Configuration.