DNS-BL Hosts
Enable DNS-BL queries
Activate this option if you wish to check incoming mail against DNS Block Lists. MDaemon will query each listed host when performing a DNS-BL lookup on the sending IP address. If a host replies to the query with a positive result, MDaemon can flag the message or refuse to accept it, depending on which options you have enabled on the DNS-BL Settings screen.
Remove
Select an entry from the DNS-BL service list and click this button to remove it from the list.
DNS-BL host
If you wish to add a new host to be queried for block listed IP addresses, enter it here.
Test
Enter a host into the DNS-BL host option and click this button to test it by looking up 127.0.0.2.
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If this test reports that 127.0.0.2 is not listed by a host you know to be working correctly, your DNS queries are probably going through a public DNS resolver that this DNS-BL service refuses to answer. See: DNS Servers for DNS-BL and URIBL Lookups. |
Message
This is the message that can be sent during the SMTP session when an IP address has been listed by the corresponding DNS-BL host listed above. This message corresponds to the ...and respond with 'Message' rather than 'user unknown' option located on the DNS-BL Settings screen.
Add
After entering a host and return message, click this button to add it to the DNS-BL hosts list.
