==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release):  0.9.9 MARIADB
- Deployed with iRedMail Easy or the downloadable installer? Easy
- Linux/BSD distribution name and version: Debian 9
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginix
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

I am needing to report spam I am still getting form legit sources, but Spamcop requires a test message to be sent to your server.

When I try adding a mail host, it send the test email and returns this:

mtpSend:smtpEnvelope (service@admin.spamcop.net, knerd@my.mail): smtpTo rcpt to:knerd@my.mail (450 4.7.1 : Helo command rejected: Host not found )

I do have greylisting turned off.
What can be done to get around this?

Thanks!