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

iRedMail 1.7.2 on Ubuntu 22.04.5 LTS with Postgres backend and NGinx on iiRedAdmin Pro

I was getting "Recipient address rejected: Intentional policy rejection, please try again later;" for any emails from @me.com and @mac.com.

When I exempted these domains from Greylisting they got delivered. @icloud.com was in there already.

I have also whitelisted the mentioned domains.

Now I am again getting these errors and Apple immediately returning these emails to the sender instead of trying again a little later, as is meant in the Greylisting protocol.

Should I totally turn of Greylisting to fix this, or are there other remedies?