Lot of logs in /var/log/letsencrypt

[QGuLL]

At every cron execution, there seems to be one log file per domain that is created in /var/log/letsencrypt, containing a lot of debug informations. It also lacks a logrotate to purge and/or compress old logs.

[QGuLL]

In fact, it is handled by certbot itself, with by default 1000 logrotate.
From the certbot man :

--max-log-backups MAX_LOG_BACKUPS
Specifies the maximum number of backup logs that
should be kept by Certbot's built in log rotation.
Setting this flag to 0 disables log rotation entirely,
causing Certbot to always append to the same log file.
(default: 1000)