Issue Dovecot stop restarts many times every day

[MariuszB]

Server operating system version

AlmaLinux 8.10 (Cerulean Leopard)

Plesk version and microupdate number

18.0.72 #3

Every day I receive alerts about imap server problem. Dovecot stops work for 2-3 minutes. In logs I have something like this:

imap-login: Fatal: Error reading configuration: read(/var/run/dovecot/config) failed: read(size=8192) failed: Interrupted system call - Also failed to read config by executing doveconf: /var/run/dovecot/config is a UNIX socket (path is from CONFIG_FILE environment)

I don't know what is the problem source. Maybe too many connections etc.? Could you tell me how to debug this issue?