We are using ISPConfig 3 since years in a multiserver environment and it worked fine so far. But when I upgrade from version 3.1.15p3 to version 3.2.10, the Email panel in the web interface has problems to connect to the mail servers. It seems that the ISPConfig master, in our case the one which serves the ISPConfig web interface only, has no connection to the ISPConfig clienets on the mail servers, while the ISPConfig clients on the dns servers and the web servers have no problems after the upgrade. I restored version 3.1.15p3 from the backups which where made during the upgrade process and it works fine again but we need to upgrade ISPConfig because we need to upgrade our Debian 10 servers. Where can I check what is wrong here? Thanks and regards, Peter
First, the master never connects to the slave system. It's always the slave system that connects to the master. See read before posting https://forum.howtoforge.com/threads/please-read-before-posting.58408/ , it contains a test script that you can use to get relevant information on the slave nodes plus it contains instructions on how to debug your issue on the slave. Reasons for slave nodes fail to connect to master are wrong PHP version on the slave, missing PHP modules on slave, missed reconfiguring permissions on master server during update of the slave or firewall or mysql misconfiguration that prevents slave from connecting to master.
Here ist the output of the mentioned script Part1: Master: 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: 15:46:22 up 1 day, 2:49, 1 user, load average: 0.16, 0.08, 0.03 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 291Mi 143Mi 55Mi 3.4Gi 3.3Gi Swap: 879Mi 0.0Ki 879Mi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 [INFO] php-cgi (used for cgi php in default vhost!) is version 7.3.31 ##### PORT CHECK ##### [WARN] Port 143 (IMAP server) seems NOT to be listening [WARN] Port 993 (IMAP server SSL) seems NOT to be listening [WARN] Port 110 (POP3 server) seems NOT to be listening [WARN] Port 995 (POP3 server SSL) seems NOT to be listening [WARN] Port 465 (SMTP server SSL) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### [WARN] I found no "submission" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this. [WARN] I found no "smtps" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this. ##### RUNNING SERVER PROCESSES ##### [INFO] I found the following web server(s): Apache 2 (PID 556) [INFO] I found the following mail server(s): Postfix (PID 892) [WARN] I could not determine which pop3 server is running. [WARN] I could not determine which imap server is running. [INFO] I found the following ftp server(s): PureFTP (PID 958) ##### LISTENING PORTS ##### (only () Local (Address) [anywhere]:21 (958/pure-ftpd) [localhost]:25 (892/master) [anywhere]:22126 (596/sshd) *:*:*:*::*:21 (958/pure-ftpd) *:*:*:*::*:25 (892/master) *:*:*:*::*:443 (556/apache2) *:*:*:*::*:3306 (26670/mysqld) *:*:*:*::*:22126 (596/sshd) *:*:*:*::*:8080 (556/apache2) *:*:*:*::*:80 (556/apache2) *:*:*:*::*:8081 (556/apache2) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination f2b-ssh tcp -- [anywhere]/0 [anywhere]/0 multiport dports 22126 f2b-sshd tcp -- [anywhere]/0 [anywhere]/0 multiport dports 22 Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain f2b-sshd (1 references) target prot opt source destination RETURN all -- [anywhere]/0 [anywhere]/0 Chain f2b-ssh (1 references) target prot opt source destination RETURN all -- [anywhere]/0 [anywhere]/0 ##### LET'S ENCRYPT ##### Certbot is installed in /usr/bin/letsencrypt WebCient1: 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: 15:49:33 up 20:26, 1 user, load average: 0.08, 0.03, 0.01 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 339Mi 2.3Gi 43Mi 1.2Gi 3.2Gi Swap: 8.0Gi 173Mi 7.8Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 [INFO] php-cgi (used for cgi php in default vhost!) is version 7.3.31 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 143 (IMAP server) seems NOT to be listening [WARN] Port 993 (IMAP server SSL) seems NOT to be listening [WARN] Port 110 (POP3 server) seems NOT to be listening [WARN] Port 995 (POP3 server SSL) seems NOT to be listening [WARN] Port 465 (SMTP server SSL) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### [WARN] I found no "submission" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this. [WARN] I found no "smtps" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this. ##### RUNNING SERVER PROCESSES ##### [INFO] I found the following web server(s): Apache 2 (PID 1003) [INFO] I found the following mail server(s): Postfix (PID 942) [WARN] I could not determine which pop3 server is running. [WARN] I could not determine which imap server is running. [INFO] I found the following ftp server(s): PureFTP (PID 14413) ##### LISTENING PORTS ##### (only () Local (Address) [anywhere]:21 (14413/pure-ftpd) [localhost]:25 (942/master) [anywhere]:22120 (593/sshd) [localhost]:11211 (494/memcached) *:*:*:*::*:21 (14413/pure-ftpd) *:*:*:*::*:25 (942/master) *:*:*:*::*:443 (1003/apache2) *:*:*:*::*:22120 (593/sshd) *:*:*:*::*:3306 (23510/mysqld) *:*:*:*::*:80 (1003/apache2) *:*:*:*::*:8081 (1003/apache2) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination f2b-pure-ftpd tcp -- [anywhere]/0 [anywhere]/0 multiport dports 21 Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain f2b-pure-ftpd (1 references) target prot opt source destination RETURN all -- [anywhere]/0 [anywhere]/0 ##### LET'S ENCRYPT ##### Certbot is installed in /usr/bin/letsencrypt WebClient2: 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: 15:51:55 up 20:23, 1 user, load average: 0.04, 0.05, 0.00 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 353Mi 1.1Gi 115Mi 2.4Gi 3.1Gi Swap: 4.0Gi 27Mi 4.0Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 [INFO] php-cgi (used for cgi php in default vhost!) is version 7.3.31 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 143 (IMAP server) seems NOT to be listening [WARN] Port 993 (IMAP server SSL) seems NOT to be listening [WARN] Port 110 (POP3 server) seems NOT to be listening [WARN] Port 995 (POP3 server SSL) seems NOT to be listening [WARN] Port 465 (SMTP server SSL) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### [WARN] I found no "submission" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this. [WARN] I found no "smtps" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this. ##### RUNNING SERVER PROCESSES ##### [INFO] I found the following web server(s): Apache 2 (PID 538) [INFO] I found the following mail server(s): Postfix (PID 1032) [WARN] I could not determine which pop3 server is running. [WARN] I could not determine which imap server is running. [INFO] I found the following ftp server(s): PureFTP (PID 1117) ##### LISTENING PORTS ##### (only () Local (Address) [anywhere]:22003 (666/sshd) [anywhere]:21 (1117/pure-ftpd) [localhost]:25 (1032/master) [localhost]:11211 (614/memcached) *:*:*:*::*:80 (538/apache2) *:*:*:*::*:8081 (538/apache2) *:*:*:*::*:22003 (666/sshd) *:*:*:*::*:21 (1117/pure-ftpd) *:*:*:*::*:25 (1032/master) *:*:*:*::*:443 (538/apache2) *:*:*:*::*:3306 (24496/mysqld) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination f2b-pure-ftpd tcp -- [anywhere]/0 [anywhere]/0 multiport dports 21 Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain f2b-pure-ftpd (1 references) target prot opt source destination RETURN all -- [anywhere]/0 [anywhere]/0 ##### LET'S ENCRYPT ##### Certbot is installed in /usr/bin/letsencrypt WebClient3: 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: 15:56:18 up 20:35, 1 user, load average: 0.04, 0.04, 0.01 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 386Mi 1.5Gi 160Mi 2.0Gi 3.1Gi Swap: 4.0Gi 25Mi 4.0Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 [INFO] php-cgi (used for cgi php in default vhost!) is version 7.3.31 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 143 (IMAP server) seems NOT to be listening [WARN] Port 993 (IMAP server SSL) seems NOT to be listening [WARN] Port 110 (POP3 server) seems NOT to be listening [WARN] Port 995 (POP3 server SSL) seems NOT to be listening [WARN] Port 465 (SMTP server SSL) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### [WARN] I found no "submission" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this. [WARN] I found no "smtps" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this. ##### RUNNING SERVER PROCESSES ##### [INFO] I found the following web server(s): Apache 2 (PID 1043) [INFO] I found the following mail server(s): Postfix (PID 971) [WARN] I could not determine which pop3 server is running. [WARN] I could not determine which imap server is running. [INFO] I found the following ftp server(s): PureFTP (PID 1157) ##### LISTENING PORTS ##### (only () Local (Address) [localhost]:11211 (600/memcached) [anywhere]:22033 (693/sshd) [anywhere]:21 (1157/pure-ftpd) [localhost]:25 (971/master) *:*:*:*::*:3306 (27897/mysqld) *:*:*:*::*:80 (1043/apache2) *:*:*:*::*:8081 (1043/apache2) *:*:*:*::*:22033 (693/sshd) *:*:*:*::*:21 (1157/pure-ftpd) *:*:*:*::*:25 (971/master) *:*:*:*::*:443 (1043/apache2) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination f2b-pure-ftpd tcp -- [anywhere]/0 [anywhere]/0 multiport dports 21 f2b-sshd tcp -- [anywhere]/0 [anywhere]/0 multiport dports 22 Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain f2b-sshd (1 references) target prot opt source destination RETURN all -- [anywhere]/0 [anywhere]/0 Chain f2b-pure-ftpd (1 references) target prot opt source destination RETURN all -- [anywhere]/0 [anywhere]/0 ##### LET'S ENCRYPT ##### Certbot is installed in /usr/bin/letsencrypt
Here ist the output of the mentioned script Part2: MailClient1: 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: 15:58:47 up 20:49, 1 user, load average: 0.09, 0.05, 0.01 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 1.6Gi 1.8Gi 38Mi 409Mi 1.9Gi Swap: 7.4Gi 218Mi 7.2Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening [WARN] Port 80 (Webserver) seems NOT to be listening [WARN] Port 443 (Webserver SSL) seems NOT to be listening [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 ##### [WARN] I could not determine which web server is running. [INFO] I found the following mail server(s): Postfix (PID 833) [INFO] I found the following pop3 server(s): Dovecot (PID 481) [INFO] I found the following imap server(s): Dovecot (PID 481) [WARN] I could not determine which ftp server is running. ##### LISTENING PORTS ##### (only () Local (Address) [anywhere]:993 (481/dovecot) [anywhere]:995 (481/dovecot) [localhost]:10023 (714/postgrey) [localhost]:10024 (981/amavisd-new) [localhost]:10025 (833/master) [localhost]:3306 (31323/mysqld) [localhost]:10026 (981/amavisd-new) [anywhere]:22122 (502/sshd) [localhost]:10027 (833/master) [anywhere]:587 (833/master) [anywhere]:110 (481/dovecot) [anywhere]:143 (481/dovecot) [anywhere]:465 (833/master) [anywhere]:25 (833/master) *:*:*:*::*:993 (481/dovecot) *:*:*:*::*:995 (481/dovecot) *:*:*:*::*:10023 (714/postgrey) *:*:*:*::*:10024 (981/amavisd-new) *:*:*:*::*:10026 (981/amavisd-new) *:*:*:*::*:22122 (502/sshd) *:*:*:*::*:587 (833/master) [localhost]10 (481/dovecot) [localhost]43 (481/dovecot) *:*:*:*::*:465 (833/master) *:*:*:*::*:25 (833/master) ##### 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 RETURN all -- [anywhere]/0 [anywhere]/0 ##### LET'S ENCRYPT ##### Certbot is installed in /usr/bin/letsencrypt MailCleint2: 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: 16:00:32 up 20:47, 1 user, load average: 0.11, 0.04, 0.01 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 922Mi 1.8Gi 44Mi 1.1Gi 2.7Gi Swap: 4.0Gi 1.2Gi 2.8Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening [WARN] Port 80 (Webserver) seems NOT to be listening [WARN] Port 443 (Webserver SSL) seems NOT to be listening [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 ##### [WARN] I could not determine which web server is running. [INFO] I found the following mail server(s): Postfix (PID 1004) [INFO] I found the following pop3 server(s): Dovecot (PID 598) [INFO] I found the following imap server(s): Dovecot (PID 598) [WARN] I could not determine which ftp server is running. ##### LISTENING PORTS ##### (only () Local (Address) [localhost]:10025 (1004/master) [localhost]:10026 (1081/amavisd-new) [localhost]:10027 (1004/master) [anywhere]:587 (1004/master) [anywhere]:110 (598/dovecot) [anywhere]:143 (598/dovecot) [anywhere]:465 (1004/master) [anywhere]:25 (1004/master) [anywhere]:22016 (642/sshd) [anywhere]:993 (598/dovecot) [anywhere]:995 (598/dovecot) [localhost]:10023 (862/postgrey) [localhost]:10024 (1081/amavisd-new) *:*:*:*::*:3306 (20270/mysqld) *:*:*:*::*:10026 (1081/amavisd-new) *:*:*:*::*:587 (1004/master) [localhost]10 (598/dovecot) [localhost]43 (598/dovecot) *:*:*:*::*:465 (1004/master) *:*:*:*::*:25 (1004/master) *:*:*:*::*:22016 (642/sshd) *:*:*:*::*:993 (598/dovecot) *:*:*:*::*:995 (598/dovecot) *:*:*:*::*:10023 (862/postgrey) *:*:*:*::*:10024 (1081/amavisd-new) ##### 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 RETURN all -- [anywhere]/0 [anywhere]/0 ##### LET'S ENCRYPT ##### Certbot is installed in /usr/bin/letsencrypt MailClient3: 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: 16:03:36 up 20:48, 1 user, load average: 0.11, 0.11, 0.04 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 1.7Gi 1.6Gi 35Mi 568Mi 1.8Gi Swap: 4.0Gi 177Mi 3.8Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening [WARN] Port 80 (Webserver) seems NOT to be listening [WARN] Port 443 (Webserver SSL) seems NOT to be listening [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 ##### [WARN] I could not determine which web server is running. [INFO] I found the following mail server(s): Postfix (PID 995) [INFO] I found the following pop3 server(s): Dovecot (PID 567) [INFO] I found the following imap server(s): Dovecot (PID 567) [WARN] I could not determine which ftp server is running. ##### LISTENING PORTS ##### (only () Local (Address) [anywhere]:22046 (636/sshd) [anywhere]:993 (567/dovecot) [anywhere]:995 (567/dovecot) [localhost]:10023 (895/postgrey) [localhost]:10024 (1082/amavisd-new) [localhost]:10025 (995/master) [localhost]:10026 (1082/amavisd-new) [localhost]:10027 (995/master) [anywhere]:587 (995/master) [anywhere]:110 (567/dovecot) [anywhere]:143 (567/dovecot) [anywhere]:465 (995/master) [anywhere]:25 (995/master) *:*:*:*::*:22046 (636/sshd) *:*:*:*::*:993 (567/dovecot) *:*:*:*::*:995 (567/dovecot) *:*:*:*::*:10023 (895/postgrey) *:*:*:*::*:10024 (1082/amavisd-new) *:*:*:*::*:3306 (16496/mysqld) *:*:*:*::*:10026 (1082/amavisd-new) *:*:*:*::*:587 (995/master) [localhost]10 (567/dovecot) [localhost]43 (567/dovecot) *:*:*:*::*:465 (995/master) *:*:*:*::*:25 (995/master) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination f2b-sshd tcp -- [anywhere]/0 [anywhere]/0 multiport dports 22 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 RETURN all -- [anywhere]/0 [anywhere]/0 Chain f2b-sshd (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 RETURN all -- [anywhere]/0 [anywhere]/0 ##### LET'S ENCRYPT ##### Certbot is installed in /usr/bin/letsencrypt
Here ist the output of the mentioned script Part2: DNSClient1: 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: 16:05:43 up 20:34, 1 user, load average: 0.02, 0.05, 0.01 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 468Mi 614Mi 45Mi 2.8Gi 3.1Gi Swap: 4.0Gi 0B 4.0Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening [WARN] Port 80 (Webserver) seems NOT to be listening [WARN] Port 443 (Webserver SSL) seems NOT to be listening [WARN] Port 143 (IMAP server) seems NOT to be listening [WARN] Port 993 (IMAP server SSL) seems NOT to be listening [WARN] Port 110 (POP3 server) seems NOT to be listening [WARN] Port 995 (POP3 server SSL) seems NOT to be listening [WARN] Port 465 (SMTP server SSL) seems NOT to be listening [WARN] Port 21 (FTP server) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### [WARN] I found no "submission" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this. [WARN] I found no "smtps" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this. ##### RUNNING SERVER PROCESSES ##### [WARN] I could not determine which web server is running. [INFO] I found the following mail server(s): Postfix (PID 1373) [WARN] I could not determine which pop3 server is running. [WARN] I could not determine which imap server is running. [WARN] I could not determine which ftp server is running. ##### LISTENING PORTS ##### (only () Local (Address) ***.***.***.***:53 (836/named) ***.***.***.***:53 (836/named) ***.***.***.***:53 (836/named) [localhost]:53 (836/named) [localhost]:25 (1373/master) [localhost]:953 (836/named) *:*:*:*::*:3306 (15796/mysqld) *:*:*:*::*:53 (836/named) *:*:*:*::*:22103 (850/sshd) *:*:*:*::*:25 (1373/master) *:*:*:*::*:953 (836/named) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination ##### LET'S ENCRYPT ##### DNSClient2: 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: 16:07:46 up 20:34, 1 user, load average: 0.13, 0.11, 0.04 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 358Mi 716Mi 45Mi 2.8Gi 3.2Gi Swap: 4.0Gi 0B 4.0Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening [WARN] Port 80 (Webserver) seems NOT to be listening [WARN] Port 443 (Webserver SSL) seems NOT to be listening [WARN] Port 143 (IMAP server) seems NOT to be listening [WARN] Port 993 (IMAP server SSL) seems NOT to be listening [WARN] Port 110 (POP3 server) seems NOT to be listening [WARN] Port 995 (POP3 server SSL) seems NOT to be listening [WARN] Port 465 (SMTP server SSL) seems NOT to be listening [WARN] Port 21 (FTP server) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### [WARN] I found no "submission" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this. [WARN] I found no "smtps" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this. ##### RUNNING SERVER PROCESSES ##### [WARN] I could not determine which web server is running. [INFO] I found the following mail server(s): Postfix (PID 1212) [WARN] I could not determine which pop3 server is running. [WARN] I could not determine which imap server is running. [WARN] I could not determine which ftp server is running. ##### LISTENING PORTS ##### (only () Local (Address) ***.***.***.***:53 (726/named) ***.***.***.***:53 (726/named) ***.***.***.***:53 (726/named) [localhost]:53 (726/named) [localhost]:25 (1212/master) [localhost]:953 (726/named) *:*:*:*::*:53 (726/named) *:*:*:*::*:25 (1212/master) *:*:*:*::*:953 (726/named) *:*:*:*::*:22110 (720/sshd) *:*:*:*::*:3306 (13150/mysqld) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination ##### LET'S ENCRYPT ##### DNSClient3: 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: 16:10:05 up 20:34, 1 user, load average: 0.00, 0.00, 0.00 [INFO] memory: total used free shared buff/cache available Mem: 3.9Gi 342Mi 748Mi 45Mi 2.8Gi 3.2Gi Swap: 4.0Gi 0B 4.0Gi [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.15p3 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.3.31-1~deb10u3 ##### PORT CHECK ##### [WARN] Port 8080 (ISPConfig) seems NOT to be listening [WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening [WARN] Port 80 (Webserver) seems NOT to be listening [WARN] Port 443 (Webserver SSL) seems NOT to be listening [WARN] Port 143 (IMAP server) seems NOT to be listening [WARN] Port 993 (IMAP server SSL) seems NOT to be listening [WARN] Port 110 (POP3 server) seems NOT to be listening [WARN] Port 995 (POP3 server SSL) seems NOT to be listening [WARN] Port 465 (SMTP server SSL) seems NOT to be listening [WARN] Port 21 (FTP server) seems NOT to be listening [WARN] Port 22 (SSH server) seems NOT to be listening ##### MAIL SERVER CHECK ##### [WARN] I found no "submission" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this. [WARN] I found no "smtps" entry in your postfix master.cf [INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this. ##### RUNNING SERVER PROCESSES ##### [WARN] I could not determine which web server is running. [INFO] I found the following mail server(s): Postfix (PID 1314) [WARN] I could not determine which pop3 server is running. [WARN] I could not determine which imap server is running. [WARN] I could not determine which ftp server is running. ##### LISTENING PORTS ##### (only () Local (Address) ***.***.***.***:53 (769/named) ***.***.***.***:53 (769/named) ***.***.***.***:53 (769/named) [localhost]:53 (769/named) [localhost]:25 (1314/master) [localhost]:953 (769/named) *:*:*:*::*:53 (769/named) *:*:*:*::*:25 (1314/master) *:*:*:*::*:953 (769/named) *:*:*:*::*:22105 (763/sshd) *:*:*:*::*:3306 (13363/mysqld) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination ##### LET'S ENCRYPT ##### I hope that you can see anything wrong here because I don't :-( Kind regards, Peter
If the common issues report is OK, next step is to read the troubleshooting instructions: On the e-mail client hosts, do the troubleshooting to see why it does not write the changes to disk.
