Help! lmtpd infinite loops with DBERROR

[ntai at smartfruit.com]

Hello,

I have a major problem with the mail delivery with LMTP.

In short,

Dec 16 09:59:23 luxor lmtp[10425]: FATAL: couldn't exec() sendmail
Dec 16 09:59:23 luxor lmtp[10424]: DBERROR db4: Locker does not exist
Dec 16 09:59:23 luxor lmtp[10424]: DBERROR: error fetching
<K1yTDqtZmtuSgkp at tpts4.seed.net.tw>: Invalid argument
Dec 16 09:59:23 luxor lmtp[10424]: duplicate_check: error looking up
<K1yTDqtZmtuSgkp at tpts4.seed.net.tw>/user.ntai: cyrusdb error
Dec 16 09:59:23 luxor lmtp[10424]: IOERROR: opening
/servers/cyrus/mail/stage./10424-1197817163-0: No such file or directory
Dec 16 09:59:23 luxor lmtp[10424]: IOERROR: error unlinking file
/servers/cyrus/mail/stage./10424-1197817163-0: No such file or directory

Then, the lmtpd process takes 100% cpu.

The server has been running without a trouble for years, and the config
has not been changed at all.

The operating system is FreeBSD 6.2-RELEASE and has been stable for
months, and the problem started a couple of days ago.

If you could give me any clue, appriciated a lot.

--
Naoyuki "Tai" Tai, ntai a t smartfruit d o t com