I seem to have an error on my server but can't see what the problem is. I see a red block on the monitor page and it stated there is 1 error but cannot figure out what or where the error is. How do I trace the root of this error?
Code: ##### SERVER ##### IP-address (as per hostname): ***.***.***.*** [WARN] could not determine server's ip address by ifconfig [INFO] OS version is Debian GNU/Linux 10 (buster) [INFO] uptime: 19:55:22 up 49 min, 3 users, load average: 0.31, 0.16, 0.31 [INFO] memory: total used free shared buff/cache available Mem: 1.7Gi 1.4Gi 82Mi 14Mi 267Mi 187Mi Swap: 1.7Gi 345Mi 1.4Gi [INFO] systemd failed services status: 0 loaded units listed. Pass --all to see loaded but inactive units, too. To show all installed unit files use 'systemctl list-unit-files'. [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.2.2 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.27-1~deb10u1 ##### PORT CHECK ##### [WARN] Port 21 (FTP server) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### ##### RUNNING SERVER PROCESSES ##### [INFO] I found the following web server(s): Apache 2 (PID 8785) [INFO] I found the following mail server(s): Postfix (PID 748) [INFO] I found the following pop3 server(s): Dovecot (PID 5323) [INFO] I found the following imap server(s): Dovecot (PID 5323) [WARN] I could not determine which ftp server is running. ##### LISTENING PORTS ##### (only () Local (Address) [localhost]:10023 (541/postgrey) [localhost]:10024 (7957/amavisd-new) [localhost]:10025 (748/master) [localhost]:10026 (7957/amavisd-new) [localhost]:10027 (748/master) [anywhere]:587 (748/master) [localhost]:11211 (381/memcached) [anywhere]:110 (5323/dovecot) [anywhere]:143 (5323/dovecot) [anywhere]:465 (748/master) ***.***.***.***:53 (408/named) [localhost]:53 (408/named) [anywhere]:2293 (411/sshd) [anywhere]:25 (748/master) [localhost]:953 (408/named) [anywhere]:993 (5323/dovecot) [anywhere]:995 (5323/dovecot) *:*:*:*::*:10023 (541/postgrey) *:*:*:*::*:10024 (7957/amavisd-new) *:*:*:*::*:10026 (7957/amavisd-new) *:*:*:*::*:3306 (478/mysqld) *:*:*:*::*:587 (748/master) [localhost]10 (5323/dovecot) [localhost]43 (5323/dovecot) *:*:*:*::*:8080 (8785/apache2) *:*:*:*::*:80 (8785/apache2) *:*:*:*::*:8081 (8785/apache2) *:*:*:*::*:465 (748/master) *:*:*:*::*:53 (408/named) *:*:*:*::*:2293 (411/sshd) *:*:*:*::*:25 (748/master) *:*:*:*::*:953 (408/named) *:*:*:*::*:443 (8785/apache2) *:*:*:*::*:993 (5323/dovecot) *:*:*:*::*:995 (5323/dovecot) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination f2b-postfix-sasl tcp -- [anywhere]/0 [anywhere]/0 multiport dports 25 Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain f2b-postfix-sasl (1 references) target prot opt source destination REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable RETURN all -- [anywhere]/0 [anywhere]/0
