Hi Nick, honestly, I don't know why that port was set to 0, I just inherited the whole server...

however, even changing that number to 143 and restarting dovecot makes no difference in the output of netstat I just pasted in another reply....

Il giorno mar 21 gen 2025 alle ore 19:00 Nick Howitt via dovecot < dovecot@dovecot.org> ha scritto:

Any reason why the imap-listener port is set to 0 and not 143 or commented out?

Have you checked if dovecot is listening on 143?

On 21/01/2025 17:50, Marco Fioretti via dovecot wrote:

...

Greetings,

I was just tasked with rebuilding from scratch the mail server of an NGO, on a brand new Ubuntu 24.04 LTS VPS.

I have copied the whole dovecot configuration to the new server, and now am stuck because:

• dovecot IS running, dovecot service status shows no errors, but:

• if I try to connect with mutt from my desktop I get "connection refused"

• the ufw firewall does allow imap/imaps connections, and there are no errors in its log

• even "telnet localhost 143" fails: Trying ::1... Connection failed: Connection refused Trying 127.0.0.1... telnet: Unable to connect to remote host: Connection refused

• I see no related errors in /var/log/mail.log or /var/log/syslog.

output of dovecot -n is pasted below, I only changed the actual domain name to "example.com"

TIA for any pointer, I really need to get this server back online as soon as possible...

Marco

2.3.21 (47349e2482): /etc/dovecot/dovecot.conf

Pigeonhole version 0.5.21 (f6cd4b8e)

doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -Pn > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:9: ssl_dh_parameters_length is no longer needed

OS: Linux 6.8.0-51-generic x86_64 Ubuntu 24.04.1 LTS ext4

Hostname: example.com

auth_debug = yes auth_verbose = yes auth_verbose_passwords = plain mail_location = maildir:/var/mail/mymail_storage/base/ mbox_write_locks = fcntl passdb { args = /etc/imap.v_users driver = passwd-file } passdb { driver = pam } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } } ssl_cert = </etc/letsencrypt/live/example.com/fullchain.pem ssl_cipher_list = ALL ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { args = /etc/imap.v_users driver = passwd-file } userdb { driver = passwd } verbose_ssl = yes

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