Timo Sirainen wrote:

On Tue, 2009-01-06 at 09:55 -0500, Bruce A. Mallett wrote:

...

If I leave the "listen" value as the default in /etc/dovecot.conf I'll get a message similar to the following on each port that it tries to open during startup:

# dovecot -F Fatal: listen(::, 143) failed: Address already in use

If I set either: listen = *

or listen = [::]

then it will start up fine. Perhaps it is as though the code tries to open the port twice for both ip4 and ip6?

I can't reproduce this with current hg. Could you try if this still happens with nightly snapshots? If it does, dovecot -n output might show something useful. Oh and what OS are you using?

Timo,

I've now had a change to try this using ... http://www.dovecot.org/nightly/dovecot-20090107.tar.gz It still fails as before. It is curious however that the failure does not occur in a Centos 5.2-64bit install under VMWare but it does occur on a Centos 5.2-64bit VPS.

The output is below. Let me know how else I might help.

       - Bruce

=================================================== -bash-3.2# uname -a Linux mail 2.6.18-92.1.18.el5xen #1 SMP Wed Nov 12 09:48:10 EST 2008 x86_64 x86_64 x86_64 GNU/Linux

-bash-3.2# iptables -L -v iptables v1.3.5: can't initialize iptables table `filter': iptables who? (do you need to insmod?) Perhaps iptables or your kernel needs to be upgraded.

-bash-3.2# lsof -i COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME master 1069 root 11u IPv4 2879 TCP *:smtp (LISTEN) avahi-dae 1144 avahi 13u IPv4 3192 UDP *:mdns avahi-dae 1144 avahi 14u IPv4 3194 UDP *:44308 sshd 2493 root 3u IPv4 36284 TCP *:ssh (LISTEN) sshd 26501 root 3u IPv4 422259 TCP vaserv.com:ssh->c-75-67-244-49.hsd1.nh.comcast.net:33143 (ESTABLISHED)

-bash-3.2# dovecot -F Fatal: listen(::, 143) failed: Address already in use

-bash-3.2# dovecot -n # 1.2.alpha4: /etc/dovecot.conf # OS: Linux 2.6.18-92.1.18.el5xen x86_64 CentOS release 5.2 (Final) ext3 info_log_path: /var/log/dovecot.log protocols: imap imaps pop3 pop3s managesieve ssl_cert_file: /etc/postfix/ssl/smtpd.crt ssl_key_file: /etc/postfix/ssl/smtpd.key login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_executable(managesieve): /usr/libexec/dovecot/managesieve-login max_mail_processes: 100 first_valid_uid: 150 last_valid_uid: 150 mail_location: maildir:/var/vmail/%d/%n mail_debug: yes mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_executable(managesieve): /usr/libexec/dovecot/managesieve mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 mail_plugin_dir(managesieve): /usr/lib64/dovecot/managesieve auth default: mechanisms: digest-md5 cram-md5 plain debug: yes debug_passwords: yes passdb: driver: sql args: /etc/dovecot/dovecot-mysql.conf userdb: driver: prefetch userdb: driver: sql args: /etc/dovecot/dovecot-mysql.conf socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 master: path: /var/run/dovecot/auth-master mode: 384 user: vmail group: mail plugin: sieve: ~/.dovecot.sieve sieve_storage: /var/vmail/%d/%n/sieve -bash-3.2# clear -bash-3.2# uname -a Linux mail 2.6.18-92.1.18.el5xen #1 SMP Wed Nov 12 09:48:10 EST 2008 x86_64 x86_64 x86_64 GNU/Linux -bash-3.2# dovecot -F Fatal: listen(::, 143) failed: Address already in use -bash-3.2# dovecot -n # 1.2.alpha4: /etc/dovecot.conf # OS: Linux 2.6.18-92.1.18.el5xen x86_64 CentOS release 5.2 (Final) ext3 info_log_path: /var/log/dovecot.log protocols: imap imaps pop3 pop3s managesieve ssl_cert_file: /etc/postfix/ssl/smtpd.crt ssl_key_file: /etc/postfix/ssl/smtpd.key login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_executable(managesieve): /usr/libexec/dovecot/managesieve-login max_mail_processes: 100 first_valid_uid: 150 last_valid_uid: 150 mail_location: maildir:/var/vmail/%d/%n mail_debug: yes mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_executable(managesieve): /usr/libexec/dovecot/managesieve mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 mail_plugin_dir(managesieve): /usr/lib64/dovecot/managesieve auth default: mechanisms: digest-md5 cram-md5 plain debug: yes debug_passwords: yes passdb: driver: sql args: /etc/dovecot/dovecot-mysql.conf userdb: driver: prefetch userdb: driver: sql args: /etc/dovecot/dovecot-mysql.conf socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 master: path: /var/run/dovecot/auth-master mode: 384 user: vmail group: mail plugin: sieve: ~/.dovecot.sieve sieve_storage: /var/vmail/%d/%n/sieve