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Global Blocked List

You can add to the Global Blocked List here. The global blocked list is a collection of blocked mail servers. Please note that by submitting to the list:


The nomination does not guarantee a spot on the list.
Each nomination will go through an evaluation process before being added to the list, while Trend Micro might contact you for information, but we have no obligation to keep you posted on the progress. You can also nominate a server to the blocked list through IP Reputation Lookup.

Trend Micro recommends using English to ensure a faster resolution time.

Mail Transfer Agent

Add one Mail Transfer Agent (MTA) server by filling out the form, or add multiple servers by importing a CSV file.

Max file size: 1MB

Download sample CSV

HELO/EHLO Checking


Specify a HELO string to enable HELO/EHLO checking. Add one HELO string by filling out the form, or add multiple strings by importing a CSV file.


Max file size: 1MB

Download sample CSV

Contact Information



Please provide a valid email format