[Dovecot] IMAP goes down from time to time
Good Afternoon
I´m really new at this and i don´t know if i´m posting at the right place.
My problem is that our Dovecot IMAP is stopping from time to time with no info in the log, i just realize about this when our support person call me saying that the whatsup monitor is showing the IMAP4 process down. I can figure about this too by trying to get in our webmail Horde and i cannot login.
Here i post my Dovecot -n command i´ll appreciate any help.
/# 1.0.7: /etc/dovecot.conf protocols: imap pop3 imaps pop3s ssl_cert_file: /etc/httpd/conf/ssl.crt/unimail.uninorte.edu.co.crt ssl_key_file: /etc/httpd/conf/ssl.key/unimail.uninorte.edu.co.key ssl_cipher_list: ALL:!LOW:!SSLv2 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 mail_location: maildir:/home/vmail/%u/Maildir mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 auth default: mechanisms: plain login cache_size: 300 cache_ttl: 600 worker_max_count: 200 passdb: driver: ldap args: /etc/dovecot-ldap.conf passdb: driver: pam userdb: driver: static args: uid=500 gid=500 home=/home/vmail/%u userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix /
Thanks so much
Juan Felipe Estrada Universidad del Norte Barranquilla Colombia
On Tuesday 20 October 2009 19:15:35 Juan Felipe Estrada wrote:
Good Afternoon
I´m really new at this and i don´t know if i´m posting at the right place.
My problem is that our Dovecot IMAP is stopping from time to time with no info in the log, i just realize about this when our support person call me saying that the whatsup monitor is showing the IMAP4 process down. I can figure about this too by trying to get in our webmail Horde and i cannot login.
Here i post my Dovecot -n command i´ll appreciate any help.
/# 1.0.7: /etc/dovecot.conf
Preliminary idea: this is a very old version of Dovecot. Before diving into debugging sessions maybe you could do yourself a favour and update to a more recent version, such as 1.2.6?
Now, when you realise that some process (is it imap-login or imap?) is down can you log into the server and confirm that, using ps or another tool? You say the log files don't tell you anything. Can you set auth_debug = yes and/or mail_debug = yes? Maybe that can give you a clou.
And how about the LDAP server? Being unable to log in could have something to do with the authentication backend. How does your dovecot-ldap.conf look like? Could it be that the LDAP lookup somehow crashes an IMAP-related process?
A newer, better Dovecot version will probably help you a lot with the debugging. It may even make the error go away. You should seriously consider upgrading.
HTH
Andreas
Andreas Ntaflos Vienna, Austria
GPG Fingerprint: 6234 2E8E 5C81 C6CB E5EC 7E65 397C E2A8 090C A9B4
On Tue, 2009-10-20 at 12:15 -0500, Juan Felipe Estrada wrote:
/# 1.0.7: /etc/dovecot.conf
Like Andreas said, this is an old version. There have been a lot of LDAP fixes in v1.1, so upgrading is likely to help.
passdb: driver: ldap args: /etc/dovecot-ldap.conf passdb: driver: pam
Also do you really want to have system users also be able to log in? If not, remove passdb pam.
participants (3)
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Andreas Ntaflos
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Juan Felipe Estrada
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Timo Sirainen