Francesco Piraneo Giuliano
2006-Dec-26 21:36 UTC
[Dovecot] Getting "Can't resolve address no: Name or service not known" error when starting Dovecot
Hi gentlemen!
After running for six month Dovecot 0.99.14 I decided to upgrade to 1.0rc15.
Actually Dovecot is running under Slackware Linux 10.2 and I got the
package from http://www.linuxpackages.net.
Problems? Yes, one! When I try to startup Dovecot program hung:
Fatal: Can't resolve address no: Name or service not known
I'm not a Dovecot or IMAP guru and I can't imagine what kind of
address number (I think is complaining about the machine's IP address)
or "name" or "service" that it doesn't know!
I googled for the entire afternoon for someone that meet the same
problem but I got no interesting clues... Yesterday I installed also
iptables and I thought the two things are related so I disabled
iptables but... nothing!
Here some valuables (I hope!) informations for the good guys that want
to help my desperate soul...
Thank you again and I hope everybody enjoy the Christmas holidays...
Bye!
Francesco
P.S.: I hope also that the Dovecot team develop an online
documentation that reflect the versatility and complexity of the
program.... ;-)
dovecot --version
1.0.rc15
dovecot --build-options
Build options: ioloop=poll notify=inotify ipv6 openssl
SQL drivers:
Passdb: checkpassword passwd passwd-file shadow
Userdb: checkpassword passwd prefetch passwd-file static
dovecot -n
# /etc/dovecot/dovecot.conf
base_dir: /var/run/dovecot/
log_path: /var/log/dovecot/errors.log
info_log_path: /var/log/dovecot/info.log
protocols: imap
listen: *:143
ssl_listen: no
ssl_disable: yes
disable_plaintext_auth: no
login_dir: /var/run/dovecot/login
login_executable: /usr/libexec/dovecot/imap-login
login_max_processes_count: 8
mail_location: mbox:/home/mail/%u:INBOX=/var/mail/%u
auth default:
cache_size: 128
cache_ttl: 60
count: 8
passdb:
driver: shadow
userdb:
driver: passwd
Follows the full configuration file:
# Base directory where to store runtime data.
base_dir = /var/run/dovecot/
# Protocols we want to be serving: imap imaps pop3 pop3s
# If you only want to use dovecot-auth, you can set this to "none".
protocols = imap
# IP or host address where to listen in for connections. It's not currently
# possible to specify multiple addresses. "*" listens in all IPv4
interfaces.
listen = 192.168.1.100
protocol imap {
listen = *:143
}
# Disable LOGIN command and all other plaintext authentications
disable_plaintext_auth = no
# Should all IMAP and POP3 processes be killed when Dovecot master process
# shuts down.
shutdown_clients = yes
# Use this logfile instead of syslog(). /dev/stderr can be used if you want to
# use stderr for logging (ONLY /dev/stderr - otherwise it is closed).
log_path = /var/log/dovecot/errors.log
# For informational messages, use this logfile instead of the default
info_log_path = /var/log/dovecot/info.log
# Prefix for each line written to log file. % codes are in strftime(3)
# format.
log_timestamp = "%b %d %H:%M:%S "
# Syslog facility to use if you're logging to syslog. Usually if you
don't
# want to use "mail", you'll use local0..local7. Also other
standard
# facilities are supported.
syslog_facility = mail
##
## SSL settings
##
ssl_listen = no
# Disable SSL/TLS support.
ssl_disable = yes
##
## Login processes
##
# Directory where authentication process places authentication UNIX sockets
# which login needs to be able to connect to.
login_dir = /var/run/dovecot/login
# User to use for the login process.
login_user = dovecot
# Set max. process size in megabytes.
login_process_size = 32
# Should each login be processed in it's own process (yes), or should one
# login process be allowed to process multiple connections (no)?
login_process_per_connection = yes
# Number of login processes to keep for listening new connections.
login_processes_count = 3
# Maximum number of login processes to create.
login_max_processes_count = 8
# Greeting message for clients.
login_greeting = Dovecot ready.
# Space-separated list of elements we want to log.
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c
# Login log format. %$ contains login_log_format_elements string, %s contains
# the data we want to log.
login_log_format = %$: %s
##
## Mailbox locations and namespaces
##
# Location for users' mailboxes.
mail_location = mbox:/home/mail/%u:INBOX=/var/mail/%u
##
## IMAP specific settings
##
protocol imap {
# Login executable location.
login_executable = /usr/libexec/dovecot/imap-login
# IMAP executable location.
mail_executable = /usr/libexec/dovecot/imap
}
##
## Authentication processes
##
# Executable location
auth_executable = /usr/libexec/dovecot/dovecot-auth
# Set max. process size in megabytes.
auth_process_size = 256
# Authentication cache size in kilobytes. 0 means it's disabled.
auth_cache_size = 128
# Time to live in seconds for cached data.
auth_cache_ttl = 60
# List of allowed characters in username.
auth_username_chars
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
auth default {
# Space separated list of wanted authentication mechanisms
mechanisms = plain
# /etc/shadow or similiar, using getspnam().
passdb shadow {
}
# /etc/passwd or similar, using getpwnam()
userdb passwd {
}
# User to use for the process.
user = root
# Number of authentication processes to create
count = 8
}
##
## Dictionary server settings
##
dict {
}
##
## Plugin settings
##
plugin {
}
Francesco Piraneo Giuliano
2006-Dec-27 09:56 UTC
[Dovecot] Getting "Can't resolve address no: Name or service not known" error when starting Dovecot
Hi gentlemen!
After running for six month Dovecot 0.99.14 I decided to upgrade to 1.0rc15.
Actually Dovecot is running under Slackware Linux 10.2 and I got the
package from http://www.linuxpackages.net.
Problems? Yes, one! When I try to startup Dovecot program hung:
Fatal: Can't resolve address no: Name or service not known
I'm not a Dovecot or IMAP guru and I can't imagine what kind of
address number (I think is complaining about the machine's IP address)
or "name" or "service" that it doesn't know!
I googled for the entire afternoon for someone that meet the same
problem but I got no interesting clues... Yesterday I installed also
iptables and I thought the two things are related so I disabled
iptables but... nothing!
Here some valuables (I hope!) informations for the good guys that want
to help my desperate soul...
Thank you again and I hope everybody enjoy the Christmas holidays...
Bye!
Francesco
P.S.: I hope also that the Dovecot team develop an online
documentation that reflect the versatility and complexity of the
program.... ;-)
dovecot --version
1.0.rc15
dovecot --build-options
Build options: ioloop=poll notify=inotify ipv6 openssl
SQL drivers:
Passdb: checkpassword passwd passwd-file shadow
Userdb: checkpassword passwd prefetch passwd-file static
dovecot -n
# /etc/dovecot/dovecot.conf
base_dir: /var/run/dovecot/
log_path: /var/log/dovecot/errors.log
info_log_path: /var/log/dovecot/info.log
protocols: imap
listen: *:143
ssl_listen: no
ssl_disable: yes
disable_plaintext_auth: no
login_dir: /var/run/dovecot/login
login_executable: /usr/libexec/dovecot/imap-login
login_max_processes_count: 8
mail_location: mbox:/home/mail/%u:INBOX=/var/mail/%u
auth default:
cache_size: 128
cache_ttl: 60
count: 8
passdb:
driver: shadow
userdb:
driver: passwd
Follows the full configuration file:
# Base directory where to store runtime data.
base_dir = /var/run/dovecot/
# Protocols we want to be serving: imap imaps pop3 pop3s
# If you only want to use dovecot-auth, you can set this to "none".
protocols = imap
# IP or host address where to listen in for connections. It's not currently
# possible to specify multiple addresses. "*" listens in all IPv4
interfaces.
listen = 192.168.1.100
protocol imap {
listen = *:143
}
# Disable LOGIN command and all other plaintext authentications
disable_plaintext_auth = no
# Should all IMAP and POP3 processes be killed when Dovecot master process
# shuts down.
shutdown_clients = yes
# Use this logfile instead of syslog(). /dev/stderr can be used if you want to
# use stderr for logging (ONLY /dev/stderr - otherwise it is closed).
log_path = /var/log/dovecot/errors.log
# For informational messages, use this logfile instead of the default
info_log_path = /var/log/dovecot/info.log
# Prefix for each line written to log file. % codes are in strftime(3)
# format.
log_timestamp = "%b %d %H:%M:%S "
# Syslog facility to use if you're logging to syslog. Usually if you
don't
# want to use "mail", you'll use local0..local7. Also other
standard
# facilities are supported.
syslog_facility = mail
##
## SSL settings
##
ssl_listen = no
# Disable SSL/TLS support.
ssl_disable = yes
##
## Login processes
##
# Directory where authentication process places authentication UNIX sockets
# which login needs to be able to connect to.
login_dir = /var/run/dovecot/login
# User to use for the login process.
login_user = dovecot
# Set max. process size in megabytes.
login_process_size = 32
# Should each login be processed in it's own process (yes), or should one
# login process be allowed to process multiple connections (no)?
login_process_per_connection = yes
# Number of login processes to keep for listening new connections.
login_processes_count = 3
# Maximum number of login processes to create.
login_max_processes_count = 8
# Greeting message for clients.
login_greeting = Dovecot ready.
# Space-separated list of elements we want to log.
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c
# Login log format. %$ contains login_log_format_elements string, %s contains
# the data we want to log.
login_log_format = %$: %s
##
## Mailbox locations and namespaces
##
# Location for users' mailboxes.
mail_location = mbox:/home/mail/%u:INBOX=/var/mail/%u
##
## IMAP specific settings
##
protocol imap {
# Login executable location.
login_executable = /usr/libexec/dovecot/imap-login
# IMAP executable location.
mail_executable = /usr/libexec/dovecot/imap
}
##
## Authentication processes
##
# Executable location
auth_executable = /usr/libexec/dovecot/dovecot-auth
# Set max. process size in megabytes.
auth_process_size = 256
# Authentication cache size in kilobytes. 0 means it's disabled.
auth_cache_size = 128
# Time to live in seconds for cached data.
auth_cache_ttl = 60
# List of allowed characters in username.
auth_username_chars
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
auth default {
# Space separated list of wanted authentication mechanisms
mechanisms = plain
# /etc/shadow or similiar, using getspnam().
passdb shadow {
}
# /etc/passwd or similar, using getpwnam()
userdb passwd {
}
# User to use for the process.
user = root
# Number of authentication processes to create
count = 8
}
##
## Dictionary server settings
##
dict {
}
##
## Plugin settings
##
plugin {
}
Nils Vogels
2006-Dec-28 10:35 UTC
[Dovecot] Getting "Can't resolve address no: Name or service not known" error when starting Dovecot
Francesco Piraneo Giuliano wrote on 26-12-2006 22:36:> Hi gentlemen! > > After running for six month Dovecot 0.99.14 I decided to upgrade to > 1.0rc15. > Actually Dovecot is running under Slackware Linux 10.2 and I got the > package from http://www.linuxpackages.net. > > Problems? Yes, one! When I try to startup Dovecot program hung: > > Fatal: Can't resolve address no: Name or service not known > > protocols: imap > listen: *:143You should try and make that "listen *' or 'listen <ip address to listen on>', and then check your /etc/services file to see if imap is listed there on port 143/tcp HTH & HAND! Nils.