This website allows you to find out if an IP address is listed in the MaiMarshal IP Reputation Service database. To check an IP address, enter the IP address (normally your mail server's IP number) in the IP Address field, complete the CAPTCHA field, and then click Search.

• You may have been directed to this site because you tried to send email and it was refused or “blocked” by another email server.
• The reason for refusal could be similar to: IP Listed on MaiMarshal IP Reputation Service

What is the MaiMarshal IP Reputation Service?

The MaiMarshal IP Reputation Service is a database of IP addresses compiled by LevelBlue. These IP addresses have been reported as sources of Unsolicited Bulk Email. LevelBlue does not recommend acceptance of email originating from these IP addresses. LevelBlue makes this reputation listing available to LevelBlue customers for use in scanning email. The choice to use the listing, and the action taken on any IP address that is listed, are at the sole discretion of the customer.

Who is LevelBlue?

LevelBlue reduces risk and builds lasting resilience so organizations can innovate and advance their mission with confidence. As the world’s most analyst-recognized and largest pure-play managed security services provider, LevelBlue elevates client outcomes that matter: stronger defense, faster response, and sustained business continuity. LevelBlue combines AI-powered security operations, advanced threat intelligence, and elite human expertise to provide the most comprehensive portfolio of strategic advisory, managed security, offensive security, and incident response services.

For more information about the company please see LevelBlue.com.

How are IP addresses listed?

An IP address can be listed in the database based on a number of factors, including automated submission from LevelBlue products looking at real email, as well as human generated submissions. The exact method of listing is proprietary.

How the MaiMarshal IP Reputation Service works

Technically, the MaiMarshal IP Reputation Service uses the architecture of a DNSBL (DNS based “block” list). The Service does not in fact block email (or anything else). The Service simply responds to automated queries from customers as to whether a particular IP address is present in the MaiMarshal IP Reputation Service database. Customers typically use this information as one item in a policy that determines acceptance of email from various sources. The choice to use the listing, and the action taken on any IP address that is listed, are at the sole discretion of the customer.

I am listed, but it’s a mistake. What can I do?

You can request that an individual IP address should be “delisted” (removed from the MaiMarshal IP Reputation Service database). To do this, fill in your email address and click on the Delist link on the result page for a listed IP address.

Is the MaiMarshal IP Reputation Service legal?

Yes. Companies are entitled to set their own policies regarding e-mails they receive or block. If they want to block Unsolicited Bulk Email from their private mail servers on their private networks, then can. If they want to use tools such as the MailMarshal IP Reputation Service to take actions based upon their policies, they can. Laws that regulate the sending of Unsolicited Bulk Email, such as the U.S. CAN-SPAM Act and the UK Privacy and Electronic Communications Regulations 2003, place restrictions on the senders of Unsolicited Bulk Email (which laws must be complied with in order for the Unsolicited Bulk Email not to be illegal), but place no restrictions on the companies who would be the receivers of the Unsolicited Bulk Email. The MailMarshal IP Reputation Service does not actually block email, but instead gives LevelBlue Customers access to a database tool they can use as a factor for consideration under their e-mail receipt policies. If you are a sender of e-mail and feel that your IP address may be mistakenly listed on the MailMarshal IP Reputation Service database, you may request to be delisted as noted above.