==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 0.9.8
- Linux/BSD distribution name and version: CentOS 7.5
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL/MariaDB
- 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.
====
I'm seeing a bunch of messages to only one domain on the server in the queue that look like this:
CEF33C61438 10113 Tue Jun 12 09:32:40 sender@example.com
(mail transport unavailable)
recipient@domainonourserver.com
I found references to Amavis in the archives, but why is this affecting only one domain?