Hello! I use ispconfig with cloudflare 1-2 years ago and i can send/receive mails, but a few days ago i can't send emails, i got, but can't send. I tried a lot of things, but not working. I think my provider don't block the outgoing traffic, because when they block, i need to got notification, but i dont got, so i think traffic is enabled. Code: ##### SERVER ##### IP-address (as per hostname): ***.***.***.*** [WARN] could not determine server's ip address by ifconfig [INFO] OS version is Ubuntu 20.04.6 LTS [INFO] uptime: 19:33:44 up 19:43, 1 user, load average: 0.08, 0.05, 0.01 [INFO] memory: total used free shared buff/cache available Mem: 7.8Gi 906Mi 6.3Gi 162Mi 560Mi 6.5Gi Swap: 0B 0B 0B [INFO] systemd failed services status: UNIT LOAD ACTIVE SUB DESCRIPTION 0 loaded units listed. [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.2.11p2 ##### VERSION CHECK ##### [INFO] php (cli) version is 8.2.17 [INFO] php-cgi (used for cgi php in default vhost!) is version 7.4.33 ##### PORT CHECK ##### ##### MAIL SERVER CHECK ##### ##### RUNNING SERVER PROCESSES ##### [INFO] I found the following web server(s): Apache 2 (PID 263644) [INFO] I found the following mail server(s): Postfix (PID 316187) [INFO] I found the following pop3 server(s): Dovecot (PID 627) [INFO] I found the following imap server(s): Dovecot (PID 627) [INFO] I found the following ftp server(s): PureFTP (PID 973) ##### LISTENING PORTS ##### (only () Local (Address) [anywhere]:22 (542/sshd:) [localhost]:5432 (621/postgres) [anywhere]:25 (316187/master) [localhost]:953 (420/named) [anywhere]:4190 (627/dovecot) [anywhere]:993 (627/dovecot) [anywhere]:995 (627/dovecot) [localhost]:11332 (630/rspamd:) [localhost]:11333 (630/rspamd:) [localhost]:11334 (630/rspamd:) [localhost]:10023 (722/postgrey) [anywhere]:587 (316187/master) [localhost]:6379 (551/redis-server) [localhost]:11211 (419/memcached) [anywhere]:110 (627/dovecot) [anywhere]:143 (627/dovecot) [anywhere]:465 (316187/master) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) ***.***.***.***:53 (420/named) [anywhere]:21 (973/pure-ftpd) [localhost]:53 (420/named) [localhost]:53 (420/named) [localhost]:53 (420/named) [localhost]:53 (420/named) ***.***.***.***:53 (385/systemd-resolve) *:*:*:*::*:22 (542/sshd:) *:*:*:*::*:5432 (621/postgres) *:*:*:*::*:25 (316187/master) *:*:*:*::*:953 (420/named) *:*:*:*::*:443 (263644/apache2) *:*:*:*::*:4190 (627/dovecot) *:*:*:*::*:993 (627/dovecot) *:*:*:*::*:995 (627/dovecot) *:*:*:*::*:11332 (630/rspamd:) *:*:*:*::*:11333 (630/rspamd:) *:*:*:*::*:11334 (630/rspamd:) *:*:*:*::*:10023 (722/postgrey) *:*:*:*::*:3306 (610/mysqld) *:*:*:*::*:587 (316187/master) *:*:*:*::*:6379 (551/redis-server) [localhost]10 (627/dovecot) [localhost]43 (627/dovecot) *:*:*:*::*:8080 (263644/apache2) *:*:*:*::*:80 (263644/apache2) *:*:*:*::*:465 (316187/master) *:*:*:*::*:8081 (263644/apache2) *:*:*:*::*:21 (973/pure-ftpd) *:*:*:*::*:53 (420/named) *:*:*:*::*:53 (420/named) *:*:*:*::*:53 (420/named) *:*:*:*::*:53 (420/named) *:*:*:*::**:*:*:*::*53 (420/named) *:*:*:*::**:*:*:*::*53 (420/named) *:*:*:*::**:*:*:*::*53 (420/named) *:*:*:*::**:*:*:*::*53 (420/named) *:*:*:*::*53 (420/named) *:*:*:*::*53 (420/named) *:*:*:*::*53 (420/named) *:*:*:*::*53 (420/named) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination f2b-pure-ftpd tcp -- [anywhere]/0 [anywhere]/0 multipor t dports 21 f2b-sshd tcp -- [anywhere]/0 [anywhere]/0 multiport dp orts 22 Chain FORWARD (policy DROP) target prot opt source destination DOCKER-USER all -- [anywhere]/0 [anywhere]/0 DOCKER-ISOLATION-STAGE-1 all -- [anywhere]/0 [anywhere]/0 ACCEPT all -- [anywhere]/0 [anywhere]/0 ctstate RELA TED,ESTABLISHED DOCKER all -- [anywhere]/0 [anywhere]/0 ACCEPT all -- [anywhere]/0 [anywhere]/0 ACCEPT all -- [anywhere]/0 [anywhere]/0 ACCEPT all -- [anywhere]/0 [anywhere]/0 ctstate RELA TED,ESTABLISHED DOCKER all -- [anywhere]/0 [anywhere]/0 ACCEPT all -- [anywhere]/0 [anywhere]/0 ACCEPT all -- [anywhere]/0 [anywhere]/0 Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain DOCKER (2 references) target prot opt source destination Chain DOCKER-ISOLATION-STAGE-1 (1 references) target prot opt source destination DOCKER-ISOLATION-STAGE-2 all -- [anywhere]/0 [anywhere]/0 DOCKER-ISOLATION-STAGE-2 all -- [anywhere]/0 [anywhere]/0 RETURN all -- [anywhere]/0 [anywhere]/0 Chain DOCKER-ISOLATION-STAGE-2 (2 references) target prot opt source destination DROP all -- [anywhere]/0 [anywhere]/0 DROP all -- [anywhere]/0 [anywhere]/0 RETURN all -- [anywhere]/0 [anywhere]/0 Chain DOCKER-USER (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 Chain f2b-sshd (1 references) target prot opt source destination REJECT all -- ***.***.***.*** [anywhere]/0 reject-with ic mp-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 i cmp-port-unreachable REJECT all -- ***.***.***.*** [anywhere]/0 reject-with ic mp-port-unreachable RETURN all -- [anywhere]/0 [anywhere]/0 ##### LET'S ENCRYPT ##### acme.sh is installed in /root/.acme.sh/acme.sh Mail logs: Code: Apr 8 18:48:34 proitserver1 postfix/qmgr[263714]: 038911C0524: from=<[email protected]>, size=696, nrcpt=1 (queue active) Apr 8 18:48:34 proitserver1 postfix/smtp[313260]: connect to mail.gmail.hu[94.199.52.215]:25: Connection refused Apr 8 18:48:34 proitserver1 postfix/smtp[313260]: 038911C0524: to=<[email protected]>, relay=none, delay=1195, delays=1195/0.04/0/0, dsn=4.4.1, status=deferred (connect to mail.gmail.hu[94.199.52.215]:25: Connection refused) thank you if can help me.
Hello! Thank you for your answer, i talked with my provider, but they said that they are not block port 25 outgoing.
