==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 0.98
- Deployed with iRedMail Easy or the downloadable installer? download installer
- Linux/BSD distribution name and version: CentOS 7.4
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? Yes
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hi,

Recently our email account received many SPAM mails from domain XXXX.icu (over 500 mails per day).
Could we block this domain extensions in iRedmail-Pro?

Many thanks.

Regards,
Matt