A Free Modern RBL

Protected Sky's RBL utilises advanced IP reputation checks to detect spam.

RBL

Using the RBL

The RBL base name is 'bad.psky.me'.

For Example, a lookup on 127.0.0.2

User@Host:~$ dig 2.0.0.127.bad.psky.me +short
127.0.0.2
User@Host:~$ 

The RBL conforms to RFC5782

Responses

Currently, the RBL returns the following:

ResponseMeaningRecommended Action
NOERRORThe IP address is question is fine for sending mail.Accept the message
127.0.0.2The IP address in question has been seen with a high rate of spam.Defer the message for later.
127.0.0.3The IP address in question has been seen to have a very high rate of spam. Reject the message at SMTP submission.