Garret Huntress
2007-Feb-27 19:13 UTC
[Dovecot] Dovecot rc23 and rc24 freeze after authentication
I had our production systems running on rc23, however we ran into problems when the server was under heavy load. Eventually, the server would begin to freeze all imap connection after authentication (according to the logs). A user would connect, authentication would succeed, and then the connection would sit until timing out. No error logs were produced. Upgrading to rc24 did not resolve the issue, but reverting to rc22 has. -Garret -- Garret W. Huntress System Administrator / System Developer Geophysical Laboratory Carnegie Institution of Washington 5251 Broad Branch Road, NW Washington, DC 20015 Email: ghuntress at ciw.edu Phone: (202)-478-8973 AIM: Garret Huntress ? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://dovecot.org/pipermail/dovecot/attachments/20070227/aa2ba44d/attachment-0004.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: Garret Huntress.vcf Type: text/directory Size: 18045 bytes Desc: not available URL: <http://dovecot.org/pipermail/dovecot/attachments/20070227/aa2ba44d/attachment-0002.bin> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://dovecot.org/pipermail/dovecot/attachments/20070227/aa2ba44d/attachment-0005.html>
Charles Marcus
2007-Feb-27 20:15 UTC
[Dovecot] Dovecot rc23 and rc24 freeze after authentication
Garret Huntress wrote:> I had our production systems running on rc23, however we ran into > problems when the server was under heavy load. Eventually, the server > would begin to freeze all imap connection after authentication > (according to the logs). A user would connect, authentication would > succeed, and then the connection would sit until timing out. No error > logs were produced. Upgrading to rc24 did not resolve the issue, but > reverting to rc22 has.Ok, give me a sec.... <grunt> <grunt> Dang - sorry, my crystall ball just isn't working... so, it may be just a leetle bit helpful if you provided some details... I'm thinking maybe some dovecot -n output, actual logs (well, you did say you had looked at them), platform, etc... -- Best regards, Charles
Garret Huntress
2007-Feb-28 04:56 UTC
[Dovecot] Dovecot rc23 and rc24 freeze after authentication
Machine: Quad 2GHz Opterons, 8GB Mem
OS: Fedora Core 5 (Linux mail1.ciw.edu 2.6.17-1.2187_FC5 #1 SMP Mon
Sep 11 01:16:59 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux)
Output from dovecot -n (now in rc22):
# /etc/dovecot.conf
base_dir: /srv/Apps/dovecot/
log_path: /var/log/dovecot/dovecot.log
protocols: imap imaps pop3s
ssl_ca_file: /etc/pki/tls/certs/ciw.edu-ca_cert.pem
ssl_cert_file: /etc/pki/tls/certs/mail.ciw.edu-cert.pem
ssl_key_file: /etc/pki/tls/private/mail.ciw.edu-key.pem
login_dir: /srv/Apps/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_max_processes_count: 1024
default_mail_env: maildir:%h/Maildir
mail_location: maildir:%h/Maildir
mail_executable(default): /usr/libexec/dovecot/imap
mail_executable(imap): /usr/libexec/dovecot/imap
mail_executable(pop3): /usr/libexec/dovecot/pop3
mail_plugins: acl
mail_plugin_dir(default): /usr/lib64/dovecot/imap
mail_plugin_dir(imap): /usr/lib64/dovecot/imap
mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3
imap_client_workarounds(default): delay-newmail outlook-idle
imap_client_workarounds(imap): delay-newmail outlook-idle
imap_client_workarounds(pop3): outlook-idle
pop3_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
namespace:
type: private
separator: /
location: maildir:%h/Maildir
inbox: yes
namespace:
type: private
separator: /
prefix: CIW Archived/
location: maildir:%h/Mailarchive
namespace:
type: public
separator: /
prefix: CIW Groups/
location: maildir:/srv/Export/Groups:CONTROL=%h/Maildir/public-
subscriptions:INDEX=%h/Maildir/public-index
auth default:
passdb:
driver: pam
args: session=yes dovecot
userdb:
driver: passwd
cat of /etc/pam.d/dovecot
#%PAM-1.0
auth required pam_nologin.so
auth include od-auth
account include od-auth
session include od-auth
cat of /etc/pam.d/od-auth
#%PAM-1.0
auth required pam_env.so
auth sufficient pam_krb5.so
auth required pam_deny.so
account required pam_ldap.so
session optional pam_mkhomedir.so skel=/etc/skel umask=077
session required pam_limits.so
session required pam_krb5.so
session required pam_ldap.so
Logs from when it occurred (usernames modified)
dovecot: Feb 26 11:50:15 Info: IMAP(user1): Disconnected: Logged out
dovecot: Feb 26 11:50:16 Info: IMAP(user1): Disconnected: Logged out
dovecot: Feb 26 11:50:16 Info: IMAP(user1): Disconnected: Logged out
dovecot: Feb 26 11:50:16 Info: imap-login: Disconnected:
rip=10.1.1.254, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:50:16 Info: IMAP(user2): Disconnected: Logged out
dovecot: Feb 26 11:50:16 Info: imap-login: Login: user=<user3>,
method=PLAIN, rip=10.1.20.232, lip=10.1.248.31, TLS
dovecot: Feb 26 11:50:17 Info: imap-login: Login: user=<user4>,
method=PLAIN, rip=10.1.20.253, lip=10.1.248.31, TLS
dovecot: Feb 26 11:50:17 Info: imap-login: Disconnected:
rip=10.1.20.233, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:50:19 Info: imap-login: Login: user=<user5>,
method=PLAIN, rip=4.21.98.3, lip=10.1.248.31, TLS
dovecot: Feb 26 11:50:20 Info: imap-login: Disconnected: Shutting
down: method=PLAIN, rip=10.1.15.194, lip=10.1.248.31, TLS
dovecot: Feb 26 11:50:21 Info: imap-login: Login: user=<user1>,
method=PLAIN, rip=10.1.1.254, lip=10.1.248.31, TLS
dovecot: Feb 26 11:50:45 Info: IMAP(user6): Disconnected: Logged out
dovecot: Feb 26 11:50:46 Info: imap-login: Login: user=<user1>,
method=PLAIN, rip=10.1.1.254, lip=10.1.248.31, TLS
dovecot: Feb 26 11:50:53 Info: IMAP(user7): Disconnected: Logged out
dovecot: Feb 26 11:50:53 Info: imap-login: Disconnected:
rip=10.1.15.170, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:50:54 Info: imap-login: Login: user=<user1>,
method=PLAIN, rip=10.1.1.254, lip=10.1.248.31, TLS
dovecot: Feb 26 11:50:57 Info: IMAP(user3): Disconnected: Logged out
dovecot: Feb 26 11:50:57 Info: imap-login: Login: user=<user8>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:50:57 Info: IMAP(user8): Disconnected
dovecot: Feb 26 11:50:58 Info: imap-login: Login: user=<user9>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:50:58 Info: IMAP(user9): Disconnected
dovecot: Feb 26 11:50:59 Info: imap-login: Login: user=<user10>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:50:59 Info: IMAP(user10): Disconnected
dovecot: Feb 26 11:51:00 Info: imap-login: Login: user=<user11>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:00 Info: IMAP(user11): Disconnected
dovecot: Feb 26 11:51:01 Info: imap-login: Login: user=<user12>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:01 Info: IMAP(user12): Disconnected
dovecot: Feb 26 11:51:02 Info: imap-login: Login: user=<user13>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:02 Info: IMAP(user13): Disconnected
dovecot: Feb 26 11:51:03 Info: imap-login: Login: user=<user14>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:03 Info: IMAP(user14): Disconnected
dovecot: Feb 26 11:51:04 Info: imap-login: Login: user=<user15>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:04 Info: IMAP(user15): Disconnected
dovecot: Feb 26 11:51:05 Info: imap-login: Login: user=<user16>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:05 Info: IMAP(user16): Disconnected
dovecot: Feb 26 11:51:06 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:06 Info: IMAP(user17): Disconnected: Logged out
dovecot: Feb 26 11:51:07 Info: imap-login: Login: user=<user16>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:08 Info: imap-login: Login: user=<user9>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:08 Info: IMAP(user9): Disconnected
dovecot: Feb 26 11:51:09 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:09 Info: IMAP(user17): Disconnected: Logged out
dovecot: Feb 26 11:51:10 Info: IMAP(user18): Disconnected: Logged out
dovecot: Feb 26 11:51:10 Info: imap-login: Login: user=<user10>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:10 Info: imap-login: Login: user=<user8>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:10 Info: IMAP(user8): Disconnected: Logged out
dovecot: Feb 26 11:51:11 Info: IMAP(user10): Disconnected: Logged out
dovecot: Feb 26 11:51:11 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:11 Info: imap-login: Login: user=<user19>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:11 Info: IMAP(user19): Disconnected: Logged out
dovecot: Feb 26 11:51:12 Info: IMAP(user17): Disconnected
dovecot: Feb 26 11:51:12 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:12 Info: imap-login: Login: user=<user9>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:12 Info: IMAP(user17): Disconnected: Logged out
dovecot: Feb 26 11:51:13 Info: imap-login: Login: user=<user19>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:13 Info: imap-login: Login: user=<user8>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:14 Info: IMAP(user19): Disconnected: Logged out
dovecot: Feb 26 11:51:14 Info: IMAP(user8): Disconnected: Logged out
dovecot: Feb 26 11:51:14 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:14 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:15 Info: IMAP(user17): Disconnected: Logged out
dovecot: Feb 26 11:51:15 Info: IMAP(user17): Disconnected
dovecot: Feb 26 11:51:15 Info: imap-login: Login: user=<user19>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:15 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:15 Info: IMAP(user17): Disconnected
dovecot: Feb 26 11:51:16 Info: IMAP(user19): Disconnected: Logged out
dovecot: Feb 26 11:51:16 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:16 Info: imap-login: Login: user=<user15>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:16 Info: IMAP(user17): Disconnected
dovecot: Feb 26 11:51:16 Info: IMAP(user15): Disconnected: Logged out
dovecot: Feb 26 11:51:17 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:17 Info: IMAP(user17): Disconnected
dovecot: Feb 26 11:51:21 Info: imap-login: Login: user=<user12>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:21 Info: IMAP(user12): Disconnected: Logged out
dovecot: Feb 26 11:51:21 Info: imap-login: Login: user=<user17>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:21 Info: IMAP(user17): Disconnected: Logged out
dovecot: Feb 26 11:51:22 Info: imap-login: Login: user=<user12>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:22 Info: IMAP(user12): Disconnected: Logged out
dovecot: Feb 26 11:51:22 Info: imap-login: Login: user=<user12>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:23 Info: IMAP(user12): Disconnected: Logged out
dovecot: Feb 26 11:51:31 Info: imap-login: Login: user=<user15>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:31 Info: IMAP(user15): Disconnected: Logged out
dovecot: Feb 26 11:51:31 Info: imap-login: Login: user=<user15>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:31 Info: IMAP(user15): Disconnected: Logged out
dovecot: Feb 26 11:51:53 Info: imap-login: Login: user=<user20>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:51:54 Info: IMAP(user20): Disconnected: Logged out
dovecot: Feb 26 11:51:59 Info: imap-login: Login: user=<user1>,
method=PLAIN, rip=10.1.1.254, lip=10.1.248.31, TLS
dovecot: Feb 26 11:52:01 Info: imap-login: Login: user=<user21>,
method=PLAIN, rip=129.49.95.41, lip=10.1.248.31, TLS
dovecot: Feb 26 11:53:07 Info: IMAP(user16): Disconnected
dovecot: Feb 26 11:53:08 Info: IMAP(user1): Disconnected: Logged out
dovecot: Feb 26 11:53:08 Info: IMAP(user1): Disconnected: Logged out
dovecot: Feb 26 11:53:08 Info: IMAP(user1): Disconnected: Logged out
dovecot: Feb 26 11:53:08 Info: IMAP(user1): Disconnected: Logged out
dovecot: Feb 26 11:53:08 Info: imap-login: Disconnected:
rip=10.1.20.233, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:53:08 Info: imap-login: Disconnected:
rip=10.1.1.254, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:53:08 Info: imap-login: Disconnected:
rip=10.1.15.170, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:53:08 Info: imap-login: Login: user=<user21>,
method=PLAIN, rip=129.49.95.41, lip=10.1.248.31, TLS
dovecot: Feb 26 11:53:09 Info: imap-login: Login: user=<user22>,
method=PLAIN, rip=10.1.15.187, lip=10.1.248.31, TLS
dovecot: Feb 26 11:53:09 Info: imap-login: Login: user=<user23>,
method=PLAIN, rip=10.1.15.170, lip=10.1.248.31, TLS
dovecot: Feb 26 11:53:10 Info: imap-login: Login: user=<user24>,
method=PLAIN, rip=68.8.68.149, lip=10.1.248.31, TLS
dovecot: Feb 26 11:53:12 Info: IMAP(user9): Disconnected
dovecot: Feb 26 11:53:29 Info: IMAP(user25): Disconnected: Logged out
dovecot: Feb 26 11:53:29 Info: imap-login: Login: user=<user26>,
method=PLAIN, rip=216.9.249.213, lip=10.1.248.31, TLS
dovecot: Feb 26 11:53:30 Info: IMAP(user26): Disconnected: Logged out
dovecot: Feb 26 11:53:31 Info: imap-login: Login: user=<user24>,
method=PLAIN, rip=68.8.68.149, lip=10.1.248.31, TLS
dovecot: Feb 26 11:54:40 Info: IMAP(user27): Disconnected: Logged out
dovecot: Feb 26 11:54:40 Info: IMAP(user27): Disconnected: Logged out
dovecot: Feb 26 11:54:41 Info: imap-login: Disconnected:
rip=10.1.15.156, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:54:41 Info: imap-login: Disconnected:
rip=10.1.15.170, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:54:42 Info: imap-login: Login: user=<user28>,
method=PLAIN, rip=10.1.2.21, lip=10.1.248.31, TLS
dovecot: Feb 26 11:54:43 Info: imap-login: Disconnected: Shutting
down: rip=10.1.15.207, lip=10.1.248.31, TLS
dovecot: Feb 26 11:54:44 Info: imap-login: Login: user=<user22>,
method=PLAIN, rip=10.1.15.187, lip=10.1.248.31, TLS
dovecot: Feb 26 11:54:44 Info: IMAP(user22): Disconnected: Logged out
dovecot: Feb 26 11:54:45 Info: imap-login: Login: user=<user29>,
method=PLAIN, rip=10.1.15.147, lip=10.1.248.31, TLS
dovecot: Feb 26 11:55:42 Info: IMAP(user28): Disconnected: Logged out
dovecot: Feb 26 11:55:42 Info: IMAP(user28): Disconnected: Logged out
dovecot: Feb 26 11:55:42 Info: IMAP(user28): Disconnected: Logged out
dovecot: Feb 26 11:55:43 Info: IMAP(user28): Disconnected: Logged out
dovecot: Feb 26 11:55:43 Info: IMAP(user28): Disconnected: Logged out
dovecot: Feb 26 11:55:43 Info: imap-login: Disconnected:
rip=10.1.20.232, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:55:43 Info: imap-login: Disconnected:
rip=10.1.2.21, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:55:43 Info: imap-login: Login: user=<user29>,
method=PLAIN, rip=10.1.15.147, lip=10.1.248.31, TLS
dovecot: Feb 26 11:55:43 Info: imap-login: Login: user=<user6>,
method=PLAIN, rip=10.1.20.128, lip=10.1.248.31, TLS
dovecot: Feb 26 11:55:43 Info: imap-login: Login: user=<user16>,
method=PLAIN, rip=10.1.15.207, lip=10.1.248.31, TLS
dovecot: Feb 26 11:55:44 Info: imap-login: Login: user=<user29>,
method=PLAIN, rip=10.1.15.147, lip=10.1.248.31, TLS
dovecot: Feb 26 11:55:44 Info: imap-login: Disconnected:
rip=10.1.20.233, lip=10.1.248.31, TLS
dovecot: Feb 26 11:55:45 Info: imap-login: Login: user=<user18>,
method=PLAIN, rip=10.1.15.142, lip=10.1.248.31, TLS
dovecot: Feb 26 11:56:45 Info: IMAP(user29): Disconnected: Logged out
dovecot: Feb 26 11:56:45 Info: IMAP(user29): Disconnected: Logged out
dovecot: Feb 26 11:56:45 Info: IMAP(user29): Disconnected: Logged out
dovecot: Feb 26 11:56:45 Info: imap-login: Disconnected:
rip=10.1.15.147, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:56:45 Info: imap-login: Login: user=<user1>,
method=PLAIN, rip=10.1.1.254, lip=10.1.248.31, TLS
dovecot: Feb 26 11:56:45 Info: imap-login: Login: user=<user18>,
method=PLAIN, rip=10.1.15.142, lip=10.1.248.31, TLS
dovecot: Feb 26 11:56:45 Info: IMAP(user18): Disconnected: Logged out
dovecot: Feb 26 11:56:46 Info: imap-login: Disconnected:
rip=10.1.2.21, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:56:46 Info: imap-login: Disconnected:
rip=10.1.2.21, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:56:47 Info: IMAP(user30): Disconnected for inactivity
dovecot: Feb 26 11:56:47 Info: imap-login: Disconnected:
rip=10.1.2.21, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:56:47 Info: imap-login: Disconnected:
rip=10.1.2.21, lip=10.1.248.31, TLS handshake
dovecot: Feb 26 11:56:48 Info: imap-login: Login: user=<user31>,
method=PLAIN, rip=160.111.107.74, lip=10.1.248.31, TLS
dovecot: Feb 26 11:56:48 Info: imap-login: Login: user=<user1>,
method=PLAIN, rip=10.1.1.254, lip=10.1.248.31, TLS
dovecot: Feb 26 11:56:48 Info: imap-login: Login: user=<user32>,
method=PLAIN, rip=10.1.15.139, lip=10.1.248.31, TLS
dovecot: Feb 26 11:56:52 Info: IMAP(user1): Disconnected: Logged out
dovecot: Feb 26 11:56:53 Info: imap-login: Login: user=<user28>,
method=PLAIN, rip=10.1.2.21, lip=10.1.248.31, TLS
dovecot: Feb 26 11:57:04 Info: IMAP(user28): Disconnected: Logged out
dovecot: Feb 26 11:57:04 Info: imap-login: Login: user=<user12>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:57:04 Info: IMAP(user12): Disconnected
dovecot: Feb 26 11:57:05 Info: imap-login: Login: user=<user33>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:57:05 Info: IMAP(user33): Disconnected
dovecot: Feb 26 11:57:06 Info: imap-login: Login: user=<user16>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:57:06 Info: IMAP(user16): Disconnected
dovecot: Feb 26 11:57:07 Info: imap-login: Login: user=<user34>,
method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Feb 26 11:57:07 Info: IMAP(user34): Disconnected
dovecot: Feb 26 11:57:09 Info: imap-login: Login: user=<user35>,
method=PLAIN, rip=10.1.15.136, lip=10.1.248.31, TLS
dovecot: Feb 26 11:57:21 Warning: Killed with signal 15
dovecot: Feb 26 11:57:21 Info: Dovecot v1.0.rc23 starting upuser1