Spam Database Check
The most common way of detecting spam is by using spam databases or blacklists, sometimes referred to as RBLs. These list the addresses of mail servers known (or believed) to send spam.
If you are having trouble sending email, you may have been blacklisted. Please enter a valid IP or name of an SMTP server and this tool will check it against a number of popular black-lists. Alternatively you may enter a valid email or domain and we will estimate the name of your SMTP server.
Bold fields are required. Underlined letters are accesskeys. (ALT-X (Win), CMD-X (Mac))
Nothing you enter above will be saved, please see our privacy statement for more information.