GuguCheck it
IP Address Blacklist Test
Check whether a sending server appears on spam lists.
An IP is the internet address of the server that actually sends the email.
Generated with gugu.tr. Results reflect the state at the time of the test.
About IP blocklists
IP blocklists flag sending IPs that have been associated with spam, malicious activity, or a security issue. Receiving servers can use those lists as a signal in their own rules.
Being listed does not guarantee that all of your mail is blocked, but it can increase the chance of spam placement or rejection. Finding the cause matters more than simply removing the listing.
What should I do if my IP is blocklisted?
- Confirm that the listed IP really belongs to your sending server.
- Read the list provider's reason and removal instructions; fix the complaint, compromised account, or configuration issue first.
- Request removal after the issue is fixed. If the IP is shared, ask your email provider for help.
Frequently asked questions
Does one listing mean everyone will block my mail?
No. Each receiver uses different lists and rules. Still, a listing on a widely used or important list deserves attention.
What if the IP does not belong to me?
If you use an email service with shared IPs, the provider handles removal. Contact its support team with this result.
Why should I fix the issue before requesting removal?
If the underlying cause remains, the IP can be listed again. Closing unauthorized access and reviewing sending permissions is the durable fix.