[Dovecot] panic in mail-index-view.c

[Peter Risdon]

With just one user, on a virtual hosting system with several hundred 
users spread across a couple of dozen domains, there is the following 
error, repeated a couple of times a second without variation, when the 
user tries to connect with Thunderbird to read his mail:

dovecot: Panic: IMAP(*******@****.co.uk): file mail-index-view.c: line 
265 (view_lookup_seq_range): assertion failed: (first_uid <= last_uid)

Any help would be appreciated.

TIA,

Peter Risdon.


# dovecot --version
1.1.7

# dovecot -n
# 1.1.7: /usr/local/etc/dovecot.conf
# OS: FreeBSD 6.2-RELEASE-p7 i386  nullfs
protocols: imap imaps pop3 pop3s
ssl_cert_file: /etc/ssl/certs/server.crt
ssl_key_file: /etc/ssl/private/server.key
ssl_key_password: **********
disable_plaintext_auth: no
login_dir: /var/run/dovecot/login
login_executable(default): /usr/local/libexec/dovecot/imap-login
login_executable(imap): /usr/local/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/libexec/dovecot/pop3-login
verbose_proctitle: yes
first_valid_uid: 125
first_valid_gid: 125
mail_access_groups: postfix
mail_location: maildir:/var/virtualmail/%d/%u/
mmap_disable: yes
lock_method: dotlock
mbox_read_locks: dotlock
mbox_write_locks: dotlock
mail_executable(default): /usr/local/libexec/dovecot/imap
mail_executable(imap): /usr/local/libexec/dovecot/imap
mail_executable(pop3): /usr/local/libexec/dovecot/pop3
mail_plugin_dir(default): /usr/local/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/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_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
namespace:
  type: private
  separator: .
  prefix: INBOX.
  inbox: yes
  list: yes
  subscriptions: yes
auth default:
  mechanisms: plain login
  verbose: yes
  debug: yes
  passdb:
    driver: sql
    args: /usr/local/etc/dovecot-mysql.conf
  userdb:
    driver: sql
    args: /usr/local/etc/dovecot-mysql.conf
  socket:
    type: listen
    client:
      path: /var/spool/postfix/private/auth
      mode: 432
      user: postfix
      group: postfix