Here is what the log shows:
[Thu Apr 28 12:54:01.73485 2026] [core:error] [pid 12487] [client 192.168.1.10] Directory does not exist: /var/www/html/notfound
This was caused by the API not responding. The log shows you accessed 3 different directories on the mail server within 1 minute. This caused it to activate the rate limiter rule, which is usually caused by a brute force attack and the system is designed to deny access for a specified amount of time when this occurs.
