getting "Unknown" FATAL error from lmtp. where to start?

[OpenMacNews]

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hi all,

on starting my cyrus master (v 2.2.12), i get the following @ console:

Oct  4 00:17:53 devbox master[17865]: process started
Oct  4 00:17:54 devbox ctl_cyrusdb[17867]: recovering cyrus databases
Oct  4 00:17:54 devbox ctl_cyrusdb[17867]: skiplist: recovered
/var/MailServer/Data/cyrus-imap/mailboxes.db (0 records, 144 bytes) in 0
seconds
Oct  4 00:17:54 devbox ctl_cyrusdb[17867]: skiplist: recovered
/var/MailServer/Data/cyrus-imap/annotations.db (0 records, 144 bytes) in
0 seconds
Oct  4 00:17:56 devbox ctl_cyrusdb[17867]: done recovering cyrus databases
Oct  4 00:17:56 devbox ctl_cyrusdb[17874]: checkpointing cyrus databases
Oct  4 00:17:56 devbox lmtp[17875]: Unknown Error Code: -1904809464
Oct  4 00:17:56 devbox lmtp[17875]: FATAL: Unknown Error Code: -1904809464
Oct  4 00:17:57 devbox lmtp[17876]: Unknown Error Code: -1904809464
Oct  4 00:17:57 devbox lmtp[17876]: FATAL: Unknown Error Code: -1904809464
Oct  4 00:17:58 devbox lmtp[17877]: Unknown Error Code: -1904809464
Oct  4 00:17:58 devbox lmtp[17877]: FATAL: Unknown Error Code: -1904809464
(... repeat loop ...)


i don't even know where to begin to debug this ...

suggestions?

thx!

richard
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