IMap disasters - Unknown error 53 - Unknown Error 54

[Elizabeth Schwartz]

I'm trying to debug my cyrus installation, which has suddenly gotten very
flaky since last night. Imap users report that they are being disconnected.
Pop is fine.
I am running cyrus 2.3.7 (blastwave build) on Solaris 10.

Have already rebooted, run a reconstruct, and (since this is Solaris 10) run
a scrub on the mail spool. I am not seeing unusual errors in the usual
places. I enabled cyrus telemetry, and what I'm seeing is all of our IMAP
connections ending with something like the log below.

Please, any ideas?

thanks Betsy


a001 OK Unknown code imap 54
<1158855266<a001 GETQUOTAROOT "INBOX"
>1158855266>* QUOTAROOT INBOX user.betsys
* QUOTA user.betsys (STORAGE 61 204800)
a001 OK Unknown code imap 54
<1158855266<A002 STATUS "INBOX" (MESSAGES UNSEEN RECENT)
>1158855266>* STATUS INBOX (MESSAGES 11 RECENT 8 UNSEEN 10)
A002 OK Unknown code imap 54
<1158855266<A003 EXAMINE "INBOX.Trash"
>1158855266>* FLAGS (\Answered \Flagged \Draft \Deleted \Seen)
* OK [PERMANENTFLAGS ()]
* 0 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 1153863597]
* OK [UIDNEXT 1]
* OK [NOMODSEQ] Sorry, modsequences have not been enabled on this mailbox
A003 OK [READ-ONLY] Unknown code imap 54
<1158855266<A004 LOGOUT
>1158855266>* BYE Unknown code imap 53
A004 OK Unknown code imap 54
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