> error: msgid=<[email protected]>: > failed to store into mailbox 'ABC': Internal error occurred. Refer to server > log for more information. [2022-04-28 > 07:41:10]. > > Which "server log" is meant in this error message?
This would be your mail logs, usually somewhere inside of /var/log/ depending on your distro. Sometimes in /var/log/messages or /var/log/maillog or other.
