Free tool
Is your server on a blacklist?
Mail servers check blocklists before accepting a message. If one of your addresses is listed, your emails bounce or land in spam. Enter a domain or an IP address.
What to do if you are listed
- Find the cause firstA hacked website form, an infected computer, a stolen email password: removal is pointless if the problem keeps going.
- Request removalEach list has its own page (links in the report). Most remove an address within a day, some on their own after a few days.
- Check againRun this tool again in 24 to 48 hours.
Questions
Why is my website address checked?
Many small businesses send email from the same server as their website (contact forms, WordPress). If that address is listed, those messages are affected.
Should I pay for a fast removal?
Rarely. The lists that matter most (Spamhaus, Barracuda, SpamCop) remove addresses for free.
What is the reverse name (PTR)?
The name tied to an IP address, set by whoever owns it (your host). Receiving servers check that it exists and points back to the same address.
Frequently asked questions
Is my mail server on a blacklist?
Enter a domain or an IP address: the tool looks up the domain's sending addresses, its website's included, in the blocklists mail servers consult. You see where you are listed and where to request removal.
What should I do if I am listed?
Find the cause first: a hacked website form, an infected computer or a stolen email password. Then request removal on each list's page and run the tool again 24 to 48 hours later.
Why is my website address checked?
Many small businesses send email from the same server as their website, for example through contact forms or WordPress. If that address is listed, those messages are affected.
Should I pay for a fast removal?
Rarely. The lists that matter most, such as Spamhaus, Barracuda and SpamCop, remove addresses for free. Start with each list's removal page, linked in the report.
