connection refused, no error anywhere
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
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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You are sure dovecot is running on the ports (netstat -tanp). You are sure this firewall is ok? Maybe flush it, just to be sure.
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
participants (3)
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Marc
-
Marco Fioretti
-
Nick Howitt