https://www.spamhaus.org/news/article/807/using-our-public-mirrors-check-your-return-codes-now.
The following results indicate an error:
- 127.255.255.252
- 127.255.255.254
- 127.255.255.255
These should not be treated as if the input IP is on the blacklist.
https://www.spamhaus.org/news/article/807/using-our-public-mirrors-check-your-return-codes-now.
The following results indicate an error:
These should not be treated as if the input IP is on the blacklist.