is a free service to check if your IP address is blacklisted, a common cause of email delivery issues. Only a small number of blacklists affect your email delivery. With, you can find out if you're on any of the blacklists most relevant to Ireland.

What is an IP address?

An IP address (Internet Protocol address) is a unique address that computers and other devices use in order to identify and communicate with each other on a computer network. An IP address simply identifies a specific computer on a network. More FAQs...

About IE Internet

IE is a leading Irish technology company that provides managed email and application hosting services for business. is a service we have developed with the needs of our customers in mind.


A. There are several ways to avoid being blacklisted. Use a managed email service that provides your company with anti-virus scanning. provide an excellent managed email service that provides anti-virus filtering as standard on all packages.

Also, maintain and update your anti-virus software. Some viruses are self-propagating infections that embed themselves into your system files - causing the virus to send out spam, without your knowledge, but that appears to come from your IP address.

Maintain your security features on your PC or Network Servers. Open Mail Relays have become a major cause for blacklisting. An Open Relay is used as a conduit to send spam through your connection by spammers who mask their identity and make it appear as if you are the originator of the message.

Finally, don't spam. It is considered a violation of Acceptable Use Policies and Guidelines to distribute unsolicited commercial email. Spamming is punishable by blacklisting and termination of services.


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