==== Required information ====
- iRedMail version (check /etc/iredmail-release):
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP / AD
- Web server (Apache or Nginx):Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hello,

since some days my mailserver can't receive mails from a specific mail Domain. But I can send my mails to this mail server.
If I send mails from the other mail Server the mail.log Show nothing. I can see at the Firewall that the mail are bounced.

I get this message back:

This message was created automatically by the SMTP relay on xxx.xxx.de.
 
A message that you sent could not be delivered to all of its recipients.
The following address(es) failed:

  xxx@xxx.de
    retry time not reached for any host after a long failure period

Any solution for me? Maybee the hole mail domain are blocked as spam? Where I can look it? I already stopped the spamassassin, but with no effect.