Am 28.05.2009 um 09:36 schrieb Sven Eulberg:

Hello,

sometimes we get the following errors on out dovecot proxies:

dovecot: May 27 20:06:10 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:06:10 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:06:10 Info: imap-login: Disconnected: Connection
queue full (auth failed, 1 attempts): user=<USER>, method=PLAIN,
REMOTE=<IP> LOCAL=<IP> dovecot: May 27 20:06:10 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:06:10 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:06:10 Info: imap-login: Disconnected: Connection
queue full (auth failed, 1 attempts): user=<USER>, method=PLAIN,
REMOTE=<IP> LOCAL=<IP> dovecot: May 27 20:06:10 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:06:10 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS dovecot: May 27 20:06:11 Info: imap-login: Disconnected: Connection
queue full (auth failed, 1 attempts): user=<USER>, method=PLAIN,
REMOTE=<IP> LOCAL=<IP> TLS dovecot: May 27 20:06:12 Info: imap-login: Disconnected: Connection
queue full (auth failed, 1 attempts): user=<USER>, method=PLAIN,
REMOTE=<IP> LOCAL=<IP> TLS dovecot: May 27 20:06:15 Info: imap-login: Disconnected: Connection
queue full (auth failed, 1 attempts): user=<USER>, method=PLAIN,
REMOTE=<IP> LOCAL=<IP> dovecot: May 27 20:09:36 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS dovecot: May 27 20:09:36 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> dovecot: May 27 20:09:36 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:09:36 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:09:36 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:11:18 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS dovecot: May 27 20:11:18 Info: imap-login: Disconnected: Connection
queue full (auth failed, 1 attempts): user=<USER>, method=PLAIN,
REMOTE=<IP> LOCAL=<IP> TLS dovecot: May 27 20:39:22 Info: imap-login: Disconnected: Connection
queue full (no auth attempts): REMOTE=<IP> LOCAL=<IP> TLS handshaking dovecot: May 27 20:39:22 Info: imap-login: Disconnected: Connection
queue full (auth failed, 1 attempts): user=<USER>, method=PLAIN,
REMOTE=<IP> LOCAL=<IP> TLS dovecot: May 27 20:39:23 Info: imap-login: Disconnected: Connection
queue full (auth failed, 1 attempts): user=<USER>, method=PLAIN,
REMOTE=<IP> LOCAL=<IP>

Our config:

./dovecot -n # 1.1.15: /usr/local/dovecot-1.1.15/etc/dovecot.conf # OS: Linux 2.6.18-6-686 i686 Debian 4.0 base_dir: /usr/local/dovecot/var/run/dovecot/ log_path: /var/log/dovecot-1.1.log protocols: pop3 pop3s imap imaps ssl_ca_file: /usr/local/dovecot/etc/ssl/de.TR_CRT ssl_cert_file: /usr/local/dovecot/etc/ssl/de.CRT ssl_key_file: /usr/local/dovecot/etc/ssl/de.PKEY disable_plaintext_auth: no login_dir: /usr/local/dovecot/var/run/dovecot/login login_executable(default): /usr/local/dovecot-1.1.15/libexec/dovecot/ imap-login login_executable(imap): /usr/local/dovecot-1.1.15/libexec/dovecot/ imap-login login_executable(pop3): /usr/local/dovecot-1.1.15/libexec/dovecot/ pop3-login login_log_format_elements: user=<%u> method=%m REMOTE=%r LOCAL=%l %c login_process_per_connection: no login_greeting_capability(default): yes login_greeting_capability(imap): yes login_greeting_capability(pop3): no login_processes_count: 10 login_max_processes_count: 256 verbose_proctitle: yes mail_location: maildir:/home/email/%u/Maildir mailbox_idle_check_interval: 60 mmap_disable: yes fsync_disable: yes mail_executable(default): /usr/local/dovecot-1.1.15/libexec/dovecot/ imap mail_executable(imap): /usr/local/dovecot-1.1.15/libexec/dovecot/imap mail_executable(pop3): /usr/local/dovecot-1.1.15/libexec/dovecot/pop3 mail_process_size: 512 mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugin_dir(default): /usr/local/dovecot-1.1.15/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/dovecot-1.1.15/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/dovecot-1.1.15/lib/dovecot/pop3 imap_client_workarounds(default): delay-newmail outlook-idle
netscape-eoh tb-extra-mailbox-sep imap_client_workarounds(imap): delay-newmail outlook-idle netscape- eoh tb-extra-mailbox-sep imap_client_workarounds(pop3): pop3_lock_session(default): no pop3_lock_session(imap): no pop3_lock_session(pop3): yes pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): %v.%u pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh auth default: mechanisms: plain login cache_size: 1024 cache_ttl: 28800 failure_delay: 3 passdb: driver: sql args: /usr/local/dovecot/etc/dovecot-mysql.conf

It seems to me the error occurs more often after increasing
login_processes_count. This errors exists with version 1.1.14 and 1.1.15 and I guess also
in earlier versions.

Thanks in advance!

Best regards, Sven

No idea?

Regards, Sven