Had a user who couldn't access his INBOX:

Mar 21 09:21:17 penguina dovecot: imap([USER]): Panic: file mail-index-sync-ext.c: line 209 (sync_ext_reorder): assertion fai led: (offset < (uint16_t)-1) Mar 21 09:21:17 penguina dovecot: imap([USER]): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0 [0x342683c660] -> /usr /lib/dovecot/libdovecot.so.0 [0x342683c6b6] -> /usr/lib/dovecot/libdovecot.so.0 [0x342683bb73] -> /usr/lib/dovecot/libdovecot -storage.so.0 [0x3426c966a8] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_ext_intro+0x240) [0x3426c979c0] -> / usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_record+0x401) [0x3426c99151] -> /usr/lib/dovecot/libdovecot-storage.s o.0(mail_index_sync_map+0x245) [0x3426c99c55] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_map+0x71b) [0x3426c8afbb ] -> /usr/lib/dovecot/libdovecot-storage.so.0 [0x3426c85d8b] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_open+0x1c e) [0x3426c8617e] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_mailbox_open+0xb5) [0x3426c4d865] -> /usr/lib/dov ecot/libdovecot-storage.so.0 [0x3426c75eab] -> /usr/lib/dovecot/libdovecot-storage.so.0 [0x3426c31006] -> dovecot/imap [hdtod d 10.245.30.58 SELECT](cmd_

Stack trace made it look like it was the INBOX, so I deleted the index files for his INBOX and everything was OK.

doveconf -n:

# OS: Linux 2.6.18-274.18.1.el5 x86_64 Red Hat Enterprise Linux Server release 5.8 (Tikanga) auth_gssapi_hostname = penguina.uvm.edu auth_krb5_keytab = /etc/krb5.keytab.dovecot auth_master_user_separator = * auth_mechanisms = plain login gssapi base_dir = /var/run/dovecot/ default_process_limit = 250 first_valid_uid = 50 lock_method = flock login_trusted_networks = [REDACTED] mail_location = mbox:~/mail:INBOX=/var/spool/mail/%1u/%1.1u/%u mail_max_lock_timeout = 30 secs mail_max_userip_connections = 100 mbox_read_locks = flock mbox_write_locks = flock mmap_disable = yes namespace { inbox = yes location = prefix = separator = / type = private } namespace { hidden = yes list = no location = prefix = mail/ separator = / type = private } namespace { hidden = yes list = no location = prefix = ~/mail/ separator = / type = private } namespace { hidden = yes list = no location = prefix = ~%u/mail/ separator = / type = private } passdb { args = /etc/dovecot/passwd.masterusers driver = passwd-file master = yes } passdb { driver = pam } service imap { process_limit = 4096 } service lmtp { client_limit = 1 inet_listener lmtp { port = 24 } } ssl_cert = <[REDACTED] ssl_key = < [REDACTED] userdb { driver = passwd } verbose_proctitle = yes

Any questions/suggestions welcome.

Jim