Add/Edit Realtime Blacklist
How to get hereThis pop-up enables you to either edit an existing realtime blacklist or configure a new realtime blacklist.
Important: Fields cannot be left blank or contain spaces.
- Realtime Blacklist Name. Enter a name in the text box to identify a new blacklist. This can be any name that you want, and will be used in log lines to identify the blacklist entry.
- Type. Select the type of lookup that the blacklist performs from the list box.
- ADDR (ADDRESS). This type of blacklist uses a message's "FROM" address to determine whether the message is spam.
- DNS. This type of blacklist checks the IP address of the connecting SMTP server against spam databases to determine whether the message is spam. If the IP address is listed in one of the blacklist's databases, the message is identified as spam.
- HELO. This type of blacklist checks the domain supplied in the HELO or EHLO command to determine whether to accept the message. The domain name that is given in the HELO/EHLO command must match the IP address.
- RHS (RIGHT-HAND SIDE). This type of blacklist checks the information following the @ symbol supplied in the "MAIL FROM" command to determine whether the message is spam.
- Server. In the text box, enter the domain name or IP address of the DNS server to contact for blacklist queries. This field contains an asterisk (*) by default, which indicates that the default IMail Server DNS is used for blacklist queries, where it relays the DNS query to the DNS server for the blacklist. Using the asterisk eliminates the need to enter the IP address or domain.
- Query Domain. In the text box, enter the domain to query in the zone file. This name usually matches the server domain name. However, sometimes a blacklist will contain multiple zones to query on the same server. When this happens, the server name and the query domain will be different. The only way to know this is to read the documentation for the blacklist being used.
- Enable. Select the check box to enable the blacklist.
- TCP/IP First. Some blacklists, especially ones that supply .txt records, have packets that are too large to transmit via the UDP protocol. These lists disable UDP access and require TCP to query the blacklist. Select this check box to allow the administrator to flag a list as one of these types.
OK. Click this button to add to Realtime Blacklist. The new blacklist appears on the Realtime Blacklists page, but will not be permanent until the "Save" button is clicked.
Cancel. Click this button to cancel adding a new blacklist. No new information should appear on the Realtime Blacklists page.
Related Topics
Understanding Realtime Blacklists