Hello, i just run my new ISP server and i can't connect to mo mail server from mail clients... Everything work ok from Roundcube. I use DNS from Cloudflare. All DNS names looks ok. ISP
Please run the test script and post the result: https://www.howtoforge.com/community/threads/please-read-before-posting.58408/ Either postfix is listening on localhost only or port 25 or 587 is blocked by a firewall on your server or in front of your server or the ISP blocks it in the internet connection that your server is using.
Hello, i have open all ports. Yesterday i change mail server. When i have this server in domain dev.example.com then everything works fine. I change DNS records, change domain names in ISP to work.example.com and now i have problems. I do not change firewall configurations. When i try connect by mail clients i get error: "Unable to connect to your IMAP server. You may have exceeded the maximum number of connections to this server. If so, use the Advanced IMAP Server Settings dialog to reduce the number cached connections."
#### SERVER ##### IP-address (as per hostname): ***.***.***.*** [WARN] could not determine server's ip address by ifconfig [INFO] ISPConfig is installed. ##### ISPCONFIG ##### ISPConfig version is 3.1.13 ##### VERSION CHECK ##### [INFO] php (cli) version is 7.0.33-0+deb9u1 ##### PORT CHECK ##### ##### MAIL SERVER CHECK ##### ##### RUNNING SERVER PROCESSES ##### [INFO] I found the following web server(s): Apache 2 (PID 519) [INFO] I found the following mail server(s): Unknown process (smtpd) (PID 634) [INFO] I found the following pop3 server(s): Dovecot (PID 859) [INFO] I found the following imap server(s): Dovecot (PID 859) [INFO] I found the following ftp server(s): PureFTP (PID 1426) ##### LISTENING PORTS ##### (only () Local (Address) [anywhere]:995 (859/dovecot) [localhost]:10023 (876/postgrey) [localhost]:10024 (769/amavisd-new) [localhost]:10025 (1193/master) [localhost]:10026 (769/amavisd-new) [localhost]:10027 (1193/master) [anywhere]:587 (1193/master) [localhost]:11211 (787/memcached) [anywhere]:110 (859/dovecot) [anywhere]:143 (859/dovecot) [anywhere]:465 (1193/master) [localhost]:9011 (775/php-fpm [anywhere]:21 (1426/pure-ftpd) ***.***.***.***:53 (774/named) [localhost]:53 (774/named) [anywhere]:22 (880/sshd) [anywhere]:25 (634/smtpd) [localhost]:953 (774/named) [anywhere]:993 (859/dovecot) *:*:*:*::*:995 (859/dovecot) *:*:*:*::*:10023 (876/postgrey) *:*:*:*::*:10024 (769/amavisd-new) *:*:*:*::*:10026 (769/amavisd-new) *:*:*:*::*:3306 (1004/mysqld) *:*:*:*::*:587 (1193/master) [localhost]10 (859/dovecot) [localhost]43 (859/dovecot) *:*:*:*::*:80 (519/apache2) *:*:*:*::*:8080 (519/apache2) *:*:*:*::*:465 (1193/master) *:*:*:*::*:8081 (519/apache2) *:*:*:*::*:21 (1426/pure-ftpd) *:*:*:*::*:53 (774/named) *:*:*:*::*:22 (880/sshd) *:*:*:*::*:25 (634/smtpd) *:*:*:*::*:953 (774/named) *:*:*:*::*:443 (519/apache2) *:*:*:*::*:993 (859/dovecot) ##### IPTABLES ##### Chain INPUT (policy ACCEPT) target prot opt source destination f2b-postfix-sasl tcp -- [anywhere]/0 [anywhere]/0 multiport dports 25 f2b-dovecot tcp -- [anywhere]/0 [anywhere]/0 multiport dports 110,995,143,993,587,465,4190 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-dovecot (1 references) target prot opt source destination REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable RETURN all -- [anywhere]/0 [anywhere]/0 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 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 RETURN all -- [anywhere]/0 [anywhere]/0
The output above looks fine. DNS changes may take about 24 hours, so it might be that dns has not been fully changed yet in all dns caches. You might also want to check the dns zone at intodns.com, maybe you have a split brain situation where not all dns servers agree on the same data.
I have a info from my server about Mailbox quota notification and i get info from mail... [email protected].... Not from my domain name.
In monitor fail2ban send information 2019-02-27 08:47:40,456 fail2ban.actions [1039]: NOTICE [dovecot] Ban MY.IP.ADDRESS Ok, fail2ban block my ip address. Ugh :-D
Run: grep server1.example.com /etc and change it in all files where it is found. Then change it in ispconfig under system > server services too.
