[Dovecot] Disconnected: BUG internal error

Ainsley Pereira dovecot at pebble.org.uk
Thu May 8 15:07:03 EEST 2008


Hello,

I'm seeing some messages from dovecot in my logs such as:
May  8 11:43:41 snowdrift dovecot: IMAP(username): Disconnected: BUG: Unknown internal error

I did some searching, and discovered a similar report last month, to
which there was a request for more information that didn't seem to get
followed up, so I have collected this information too.

Dovecot version: 1.0.10 (from Ubuntu hardy package, which includes some
patches; details of the patches can be found here:
http://svn.debian.org/wsvn/collab-maint/deb-maint/dovecot/trunk/debian/patches/?rev=0&sc=0 )
OS: Ubuntu 8.04 (Hardy)
CPU: x86
Filesystem: ext3
IMAP client: Thunderbird. What was happening with it is not too clear,
unfortunately it only seems to occur for one user, and that's not me.
Reproducability: Seems to occur fairly frequently, but unable to provide
steps.
dovecot -n output:
# 1.0.10: /etc/dovecot/dovecot.conf
log_timestamp: %Y-%m-%d %H:%M:%S
protocols: imaps pop3s
ssl_cert_file: /etc/ssl/certs/snowdrift-cert.pem
ssl_key_file: /etc/ssl/private/snowdrift-key.pem
ssl_cipher_list: ALL:!LOW:!SSLv2
login_dir: /var/run/dovecot/login
login_executable(default): /usr/lib/dovecot/imap-login
login_executable(imap): /usr/lib/dovecot/imap-login
login_executable(pop3): /usr/lib/dovecot/pop3-login
mail_location: mbox:~/mail:INBOX=/var/mail/%u
mail_debug: yes
mail_executable(default): /usr/lib/dovecot/rawlog /usr/lib/dovecot/imap
mail_executable(imap): /usr/lib/dovecot/rawlog /usr/lib/dovecot/imap
mail_executable(pop3): /usr/lib/dovecot/pop3
mail_plugin_dir(default): /usr/lib/dovecot/modules/imap
mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap
mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3
pop3_uidl_format(default):
pop3_uidl_format(imap):
pop3_uidl_format(pop3): %08Xu%08Xv
auth default:
  passdb:
    driver: pam
  userdb:
    driver: passwd

Raw log output:
29 OK Fetch completed.
* 632 FETCH (UID 14265 RFC822.SIZE 4373)
* BYE BUG: Unknown internal error

Immediately before that was a set of headers from an email, so I guess
that's what the "29" line's talking about, and it's just the last two
that are relevant.

Please let me know if there's anything further I can provide to help
track this down.

Thanks,
Ainsley


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