Originally Posted by snowfly
Can you see anything wrong with my config, or anything that might suggest why emails aren't being delivered to the 2nd, 3rd... addressed users when sent to multiple users?
I can provide more of the main.cf file, or other files, just let me know what parts.
Ok, you have all your data in a MySQL database, so you should check the MySQL database if there's some problem with the data (aliases, transports, etc.) that causes your problem.