DNSBL
A DNS-based Blackhole List (DNSBL) or Real-time Blackhole List (RBL) is an effort to stop email spamming. Most mail server software can be configured to reject or flag messages which have been sent from a site listed on one or more such lists.
Below you can mass test such DNSBL's against the IPs of your mail servers to possible listings.
Check
Enter the IP address or hostname of your mail server below and hit Check.
| # | Blacklist | Status |
|---|