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Edge Transport > Anti-Spam > IP Block or Allow List Providers Properties > Providers Tab > Add Provider Dialog

 

Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1

Topic Last Modified: 2006-07-17

Use the Add Provider dialog box to restrict the type of IP Block list matches that your organization blocks. You can set the IP Block List provider configuration as follows:

  • Act on a specific bitmask.

  • Act on a specific absolute value.

  • Block all IP Block list matches that are returned by the IP Block List provider.

IP Block List and IP Allow List provider services can help you reduce spam and increase overall message processing on your computer that has the Edge Transport server role installed. You should consider configuring multiple IP Block List provider services, and IP Allow List provider services, which are sometimes referred to as safe list services.

For detailed instructions and values that are specific to your provider's requirements, see your provider's documentation.

Provider name

In this field, type the name of the IP Block List provider service. This name is for your own use to identify the provider.

Lookup domain

In this field, type the domain name that the Connection Filter agent queries for updated IP Block list information.

Return Status codes

When the IP address of a remote server that is sending a message matches an IP address on an IP Block List provider service's IP Block List, most IP Block List provider services return either bitmask or absolute value data types. Within these data types, there may be multiple values that indicate the type of list that the submitted IP address is on.

Match to any return code

When you select this option, the Connection Filter agent treats any IP Address status code that is returned by the IP Block List provider service as a match.

Match to the following mask

When you select this option, the Connection Filter agent acts only on messages that match the return status code of 127.0.0.x, where the integer x is any one of the following values:

  • 1   The IP address is on an IP Block List.

  • 2   The Simple Mail Transfer Protocol (SMTP) server is configured to act as an open relay.

  • 4   The IP address supports a dial-up IP address.

Match to any of the following responses

When you select this option, the Connection Filter agent acts only on messages that match the same IP address status code that is returned by the IP Block List provider service. The following examples show absolute values and the explicit responses:

  • 127.0.0.2   The IP address is a direct spam source.

  • 127.0.0.4   The IP address is a bulk mailer.

  • 127.0.0.5   The remote server that is sending the message is known to support multistage open relays.

For information on connection filtering and IP Block List and IP Allow List functionality, see the following topics:

 
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