Spamhaus is a non-profit organization that tracks spam and cybercrime. They maintain a blacklist of known spam sources, which is used by email providers and other organizations to filter out spam. Is Spamhaus legitimate? Yes, Spamhaus is a legitimate organization. They are a nonprofit organization that tracks spam and works to stop it.

How do I unblock my IP address from Spamhaus?

Spamhaus is a blacklist that many email providers use to determine whether or not to deliver email from a particular sender. If your IP address is on the Spamhaus blacklist, you may have difficulty sending email.

There are a few things you can do to try to get your IP address off the Spamhaus blacklist:

1. First, check to see if you are actually on the blacklist. You can do this by going to the Spamhaus website and entering your IP address in the search box.

2. If you are on the blacklist, there will be a link to submit a delisting request. Follow the instructions on that page to submit a delisting request.

3. In some cases, you may need to provide additional information or documentation to support your delisting request.

4. Once you have submitted a delisting request, it can take up to a week for your IP address to be removed from the blacklist.

Who runs Spamhaus?

Spamhaus is a not-for-profit organisation that tracks spam and related cybercrime, and works to protect the Internet from these threats. The organisation is run by a team of volunteers, with the help of a small staff. The team is led by Executive Director Richard Cox, who has been with Spamhaus since its inception in 1998.

Does Microsoft use Spamhaus?

Microsoft uses Spamhaus, an international non-profit organization that tracks spam and related cyber threats, to help protect its users from spam and other malicious activity.

Spamhaus maintains a blacklist of known spam-related IP addresses and domains, which Microsoft uses to help filter spam and other malicious email. Microsoft also uses Spamhaus data to help protect its users from phishing attacks and other online threats.

How can I see if my IP is blacklisted?

If you think your IP might be blacklisted, there are a few ways to check. One is to use a web-based tool like MX Toolbox's Blacklist Check ( This will check your IP against over 100 known blacklists.

Another way to check is to use the command line tool "dig" (part of the Bind9 suite). For example, to check if your IP is blacklisted by the Spamhaus ZEN blacklist, you would run the following command:

dig +short your.ip.address

If your IP is blacklisted, you will see a response like this:

If you don't get a response, or if the response is something other than an IP address, then your IP is not currently blacklisted by that service.