[Dovecot] Problem with opening ports in alpha5 ?

Bruce A. Mallett bam at NightStorm.com
Wed Jan 7 14:31:43 EET 2009 

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
===================================================

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