On 19 Feb 2016, at 17:12, Nagy, Attila bra@fsn.hu wrote:
Hi,
This is a capture from an imapc client session (which is triggered by a message, received via LMTP):
- OK [CAPABILITY IMAP4rev1 NAMESPACE] Ready 2 LOGIN "uid" "pass" 2 OK LOGIN succeeded 1 LIST "" ""
- LIST (\Noselect) "/" "" 1 OK LIST completed 3 APPEND "INBOX" {568}
- Ready for 568 octets of data [...] 3 OK APPEND complete 4 EXAMINE "INBOX"
- FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
- OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted.
- 4 EXISTS
- 0 RECENT
- OK [UIDVALIDITY 1455885804]
- OK [UIDNEXT 5] 4 OK [READ-ONLY] EXAMINE successful 5 UID FETCH 0 (RFC822.SIZE BODY.PEEK[HEADER.FIELDS (Message-ID)]) 5 BAD Illegal syntax: Bad message number 0
Dovecot 2.2.21
I don't see any problems with the conversation otherwise. Is it safe to assume this is a bug in imapc?
doveconf -n would be helpful. I guess you have mail_log plugin enabled? And imapc isn't used with any index directory? So Dovecot attempts to log Message-ID and size after saving a mail, but those aren't in cache (because indexes are disabled) and the transaction isn't committed yet either so the mail has no UID.
So the only fix for now that I can do is to just not send the FETCH command and instead fail it immediately: https://github.com/dovecot/core/commit/969f57f722570982a5febbaab2462b692aa68...
Any further fixing would become difficult.