After moving /etc/cron.d/itflow to another location, syslog:
2025-03-07T12:25:01.097387+01:00 hd cron[31866]: (*system*sysstat) INSECURE MODE (group/other writable) (/etc/cron.d/sysstat)
2025-03-07T12:25:01.098128+01:00 hd cron[31866]: (*system*e2scrub_all) INSECURE MODE (group/other writable) (/etc/cron.d/e2scrub_all)
2025-03-07T12:25:01.098223+01:00 hd cron[31866]: (*system*certbot) INSECURE MODE (group/other writable) (/etc/cron.d/certbot)
2025-03-07T12:25:01.098307+01:00 hd cron[31866]: (*system*itflow) INSECURE MODE (group/other writable) (/etc/cron.d/itflow)
2025-03-07T12:25:01.098391+01:00 hd cron[31866]: (*system*anacron) INSECURE MODE (group/other writable) (/etc/cron.d/anacron)
2025-03-07T12:25:01.098477+01:00 hd cron[31866]: (*system*php) INSECURE MODE (group/other writable) (/etc/cron.d/php)
2025-03-07T12:25:01.107216+01:00 hd CRON[55904]: (root) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron_mail_queue.php)
2025-03-07T12:25:01.109673+01:00 hd CRON[55905]: (root) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron_ticket_email_parser.php)
2025-03-07T12:25:01.109877+01:00 hd CRON[55899]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:25:01.109943+01:00 hd CRON[55900]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:25:01.112550+01:00 hd CRON[55906]: (hd) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron_ticket_email_parser.php)
2025-03-07T12:25:01.113817+01:00 hd CRON[55907]: (hd) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron.php)
2025-03-07T12:25:01.114428+01:00 hd CRON[55908]: (hd) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron_mail_queue.php)
2025-03-07T12:25:01.114483+01:00 hd CRON[55902]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:25:01.116469+01:00 hd CRON[55901]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:25:01.116557+01:00 hd CRON[55903]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:25:47.857973+01:00 hd kernel: [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:f4:e2:c6:c9:80:6c:08:00 SRC=172.15.1.17 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=59356 PROTO=2
2025-03-07T12:25:47.858005+01:00 hd kernel: [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:f4:e2:c6:c9:80:6c:08:00 SRC=172.15.1.17 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=59356 PROTO=2
2025-03-07T12:25:51.406638+01:00 hd kernel: [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:fb:88:c9:b3:bb:86:83:08:00 SRC=172.15.1.108 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=45956 PROTO=2
2025-03-07T12:26:01.118320+01:00 hd cron[31866]: (*system*sysstat) INSECURE MODE (group/other writable) (/etc/cron.d/sysstat)
2025-03-07T12:26:01.119268+01:00 hd cron[31866]: (*system*e2scrub_all) INSECURE MODE (group/other writable) (/etc/cron.d/e2scrub_all)
2025-03-07T12:26:01.119412+01:00 hd cron[31866]: (*system*certbot) INSECURE MODE (group/other writable) (/etc/cron.d/certbot)
2025-03-07T12:26:01.119496+01:00 hd cron[31866]: (*system*anacron) INSECURE MODE (group/other writable) (/etc/cron.d/anacron)
2025-03-07T12:26:01.119596+01:00 hd cron[31866]: (*system*php) INSECURE MODE (group/other writable) (/etc/cron.d/php)
2025-03-07T12:26:01.127768+01:00 hd CRON[55926]: (root) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron_ticket_email_parser.php)
2025-03-07T12:26:01.129862+01:00 hd CRON[55925]: (root) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron_mail_queue.php)
2025-03-07T12:26:01.130207+01:00 hd CRON[55921]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:26:01.130340+01:00 hd CRON[55920]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:26:01.131070+01:00 hd CRON[55927]: (hd) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron_ticket_email_parser.php)
2025-03-07T12:26:01.133326+01:00 hd CRON[55928]: (hd) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron_mail_queue.php)
2025-03-07T12:26:01.133428+01:00 hd CRON[55923]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:26:01.133822+01:00 hd CRON[55929]: (hd) CMD (www-data /usr/bin/php /var/www/hd.***.pl/scripts/cron.php)
2025-03-07T12:26:01.135621+01:00 hd CRON[55924]: (CRON) info (No MTA installed, discarding output)
2025-03-07T12:26:01.135671+01:00 hd CRON[55922]: (CRON) info (No MTA installed, discarding output)